git.delta.rocks / unique-network / refs/commits / f38d98e86844

difftreelog

Merge pull request #366 from UniqueNetwork/feature/unique-children

ut-akuznetsov2022-06-07parents: #3d5365c #004643c.patch.diff
in: master
Token Children RPC

17 files changed

modifiedclient/rpc/src/lib.rsdiffbeforeafterboth
--- a/client/rpc/src/lib.rs
+++ b/client/rpc/src/lib.rs
@@ -24,7 +24,7 @@
 use anyhow::anyhow;
 use up_data_structs::{
 	RpcCollection, CollectionId, CollectionStats, CollectionLimits, TokenId, Property,
-	PropertyKeyPermission, TokenData,
+	PropertyKeyPermission, TokenData, TokenChild,
 };
 use sp_api::{BlockId, BlockT, ProvideRuntimeApi, ApiExt};
 use sp_blockchain::HeaderBackend;
@@ -76,6 +76,13 @@
 		token: TokenId,
 		at: Option<BlockHash>,
 	) -> Result<Option<CrossAccountId>>;
+	#[rpc(name = "unique_tokenChildren")]
+	fn token_children(
+		&self,
+		collection: CollectionId,
+		token: TokenId,
+		at: Option<BlockHash>,
+	) -> Result<Vec<TokenChild>>;
 
 	#[method(name = "unique_collectionProperties")]
 	fn collection_properties(
@@ -393,6 +400,7 @@
 	pass_method!(
 		topmost_token_owner(collection: CollectionId, token: TokenId) -> Option<CrossAccountId>, unique_api
 	);
+	pass_method!(token_children(collection: CollectionId, token: TokenId) -> Vec<TokenChild>, unique_api);
 	pass_method!(total_supply(collection: CollectionId) -> u32, unique_api);
 	pass_method!(account_balance(collection: CollectionId, account: CrossAccountId) -> u32, unique_api);
 	pass_method!(balance(collection: CollectionId, account: CrossAccountId, token: TokenId) -> String => |v| v.to_string(), unique_api);
modifiedpallets/common/src/lib.rsdiffbeforeafterboth
--- a/pallets/common/src/lib.rs
+++ b/pallets/common/src/lib.rs
@@ -40,6 +40,7 @@
 	MAX_TOKEN_PREFIX_LENGTH,
 	COLLECTION_ADMINS_LIMIT,
 	TokenId,
+	TokenChild,
 	CollectionStats,
 	MAX_TOKEN_OWNERSHIP,
 	CollectionMode,
@@ -502,6 +503,7 @@
 			CollectionStats,
 			CollectionId,
 			TokenId,
+			TokenChild,
 			PhantomType<(
 				TokenData<T::CrossAccountId>,
 				RpcCollection<T::AccountId>,
modifiedpallets/nonfungible/src/lib.rsdiffbeforeafterboth
--- a/pallets/nonfungible/src/lib.rs
+++ b/pallets/nonfungible/src/lib.rs
@@ -22,7 +22,7 @@
 use up_data_structs::{
 	AccessMode, CollectionId, CustomDataLimit, TokenId, CreateCollectionData, CreateNftExData,
 	mapping::TokenAddressMapping, NestingRule, budget::Budget, Property, PropertyPermission,
-	PropertyKey, PropertyKeyPermission, Properties, PropertyScope, TrySetProperty,
+	PropertyKey, PropertyKeyPermission, Properties, PropertyScope, TrySetProperty, TokenChild,
 };
 use pallet_evm::{account::CrossAccountId, Pallet as PalletEvm};
 use pallet_common::{
@@ -604,7 +604,7 @@
 
 		// =========
 
-		<PalletStructure<T>>::unnest_if_nested(from, collection.id, token);
+		<PalletStructure<T>>::unnest_if_nested(&token_data.owner, collection.id, token);
 
 		<TokenData<T>>::insert(
 			(collection.id, token),
@@ -988,6 +988,15 @@
 			.is_some()
 	}
 
+	pub fn token_children_ids(collection_id: CollectionId, token_id: TokenId) -> Vec<TokenChild> {
+		<TokenChildren<T>>::iter_prefix((collection_id, token_id))
+			.map(|((child_collection_id, child_id), _)| TokenChild {
+				collection: child_collection_id,
+				token: child_id,
+			})
+			.collect()
+	}
+
 	/// Delegated to `create_multiple_items`
 	pub fn create_item(
 		collection: &NonfungibleHandle<T>,
modifiedpallets/structure/src/lib.rsdiffbeforeafterboth
--- a/pallets/structure/src/lib.rs
+++ b/pallets/structure/src/lib.rs
@@ -191,8 +191,8 @@
 		token_id: TokenId,
 		nesting_budget: &dyn Budget,
 	) -> DispatchResult {
-		Self::try_exec_if_owner_is_valid_nft(under, |d, parent_id| {
-			d.check_nesting(from, (collection_id, token_id), parent_id, nesting_budget)
+		Self::try_exec_if_owner_is_valid_nft(under, |collection, parent_id| {
+			collection.check_nesting(from, (collection_id, token_id), parent_id, nesting_budget)
 		})
 	}
 
@@ -203,10 +203,10 @@
 		token_id: TokenId,
 		nesting_budget: &dyn Budget,
 	) -> DispatchResult {
-		Self::try_exec_if_owner_is_valid_nft(under, |d, parent_id| {
-			d.check_nesting(from, (collection_id, token_id), parent_id, nesting_budget)?;
+		Self::try_exec_if_owner_is_valid_nft(under, |collection, parent_id| {
+			collection.check_nesting(from, (collection_id, token_id), parent_id, nesting_budget)?;
 
-			d.nest(parent_id, (collection_id, token_id));
+			collection.nest(parent_id, (collection_id, token_id));
 
 			Ok(())
 		})
@@ -217,8 +217,8 @@
 		collection_id: CollectionId,
 		token_id: TokenId,
 	) {
-		Self::exec_if_owner_is_valid_nft(owner, |d, parent_id| {
-			d.nest(parent_id, (collection_id, token_id))
+		Self::exec_if_owner_is_valid_nft(owner, |collection, parent_id| {
+			collection.nest(parent_id, (collection_id, token_id))
 		});
 	}
 
@@ -227,8 +227,8 @@
 		collection_id: CollectionId,
 		token_id: TokenId,
 	) {
-		Self::exec_if_owner_is_valid_nft(owner, |d, parent_id| {
-			d.unnest(parent_id, (collection_id, token_id))
+		Self::exec_if_owner_is_valid_nft(owner, |collection, parent_id| {
+			collection.unnest(parent_id, (collection_id, token_id))
 		});
 	}
 
@@ -236,8 +236,8 @@
 		account: &T::CrossAccountId,
 		action: impl FnOnce(&dyn CommonCollectionOperations<T>, TokenId),
 	) {
-		Self::try_exec_if_owner_is_valid_nft(account, |d, id| {
-			action(d, id);
+		Self::try_exec_if_owner_is_valid_nft(account, |collection, id| {
+			action(collection, id);
 			Ok(())
 		})
 		.unwrap();
modifiedprimitives/data-structs/src/lib.rsdiffbeforeafterboth
--- a/primitives/data-structs/src/lib.rs
+++ b/primitives/data-structs/src/lib.rs
@@ -585,6 +585,14 @@
 
 #[derive(Encode, Decode, MaxEncodedLen, PartialEq, Clone, Debug, TypeInfo)]
 #[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]
+// todo possibly rename to be used generally as an address pair
+pub struct TokenChild {
+	pub token: TokenId,
+	pub collection: CollectionId,
+}
+
+#[derive(Encode, Decode, MaxEncodedLen, PartialEq, Clone, Debug, TypeInfo)]
+#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]
 pub struct CollectionStats {
 	pub created: u32,
 	pub destroyed: u32,
modifiedprimitives/rpc/src/lib.rsdiffbeforeafterboth
--- a/primitives/rpc/src/lib.rs
+++ b/primitives/rpc/src/lib.rs
@@ -18,7 +18,7 @@
 
 use up_data_structs::{
 	CollectionId, TokenId, RpcCollection, CollectionStats, CollectionLimits, Property,
-	PropertyKeyPermission, TokenData,
+	PropertyKeyPermission, TokenData, TokenChild,
 };
 use sp_std::vec::Vec;
 use codec::Decode;
@@ -41,6 +41,7 @@
 
 		fn token_owner(collection: CollectionId, token: TokenId) -> Result<Option<CrossAccountId>>;
 		fn topmost_token_owner(collection: CollectionId, token: TokenId) -> Result<Option<CrossAccountId>>;
+		fn token_children(collection: CollectionId, token: TokenId) -> Result<Vec<TokenChild>>;
 
 		fn collection_properties(collection: CollectionId, properties: Option<Vec<Vec<u8>>>) -> Result<Vec<Property>>;
modifiedruntime/common/src/runtime_apis.rsdiffbeforeafterboth
--- a/runtime/common/src/runtime_apis.rs
+++ b/runtime/common/src/runtime_apis.rs
@@ -29,7 +29,9 @@
 
                     Ok(Some(<pallet_structure::Pallet<Runtime>>::find_topmost_owner(collection, token, &budget)?))
                 }
-
+                fn token_children(collection: CollectionId, token: TokenId) -> Result<Vec<TokenChild>, DispatchError> {
+                    Ok(<pallet_nonfungible::Pallet<Runtime>>::token_children_ids(collection, token))
+                }
                 fn collection_properties(
                     collection: CollectionId,
                     keys: Option<Vec<Vec<u8>>>
modifiedtests/src/interfaces/augment-api-query.tsdiffbeforeafterboth
5import type { BTreeMap, Bytes, Option, U256, Vec, bool, u128, u16, u32, u64 } from '@polkadot/types-codec';5import type { BTreeMap, Bytes, Option, U256, Vec, bool, u128, u16, u32, u64 } from '@polkadot/types-codec';
6import type { AnyNumber, ITuple } from '@polkadot/types-codec/types';6import type { AnyNumber, ITuple } from '@polkadot/types-codec/types';
7import type { AccountId32, H160, H256 } from '@polkadot/types/interfaces/runtime';7import type { AccountId32, H160, H256 } from '@polkadot/types/interfaces/runtime';
8import type { CumulusPalletDmpQueueConfigData, CumulusPalletDmpQueuePageIndexData, CumulusPalletParachainSystemRelayStateSnapshotMessagingStateSnapshot, CumulusPalletXcmpQueueInboundChannelDetails, CumulusPalletXcmpQueueOutboundChannelDetails, CumulusPalletXcmpQueueQueueConfigData, EthereumBlock, EthereumLog, EthereumReceiptReceiptV3, EthereumTransactionTransactionV2, FpRpcTransactionStatus, FrameSupportWeightsPerDispatchClassU64, FrameSystemAccountInfo, FrameSystemEventRecord, FrameSystemLastRuntimeUpgradeInfo, FrameSystemPhase, OrmlVestingVestingSchedule, PalletBalancesAccountData, PalletBalancesBalanceLock, PalletBalancesReleases, PalletBalancesReserveData, PalletEvmAccountBasicCrossAccountIdRepr, PalletEvmContractHelpersSponsoringModeT, PalletNonfungibleItemData, PalletRefungibleItemData, PalletTransactionPaymentReleases, PalletTreasuryProposal, PhantomTypeUpDataStructs, PolkadotCorePrimitivesOutboundHrmpMessage, PolkadotPrimitivesV2AbridgedHostConfiguration, PolkadotPrimitivesV2PersistedValidationData, PolkadotPrimitivesV2UpgradeRestriction, SpRuntimeDigest, SpTrieStorageProof, UpDataStructsCollection, UpDataStructsCollectionStats, UpDataStructsProperties, UpDataStructsPropertiesMapPropertyPermission, UpDataStructsPropertyPermission } from '@polkadot/types/lookup';8import type { CumulusPalletDmpQueueConfigData, CumulusPalletDmpQueuePageIndexData, CumulusPalletParachainSystemRelayStateSnapshotMessagingStateSnapshot, CumulusPalletXcmpQueueInboundChannelDetails, CumulusPalletXcmpQueueOutboundChannelDetails, CumulusPalletXcmpQueueQueueConfigData, EthereumBlock, EthereumLog, EthereumReceiptReceiptV3, EthereumTransactionTransactionV2, FpRpcTransactionStatus, FrameSupportWeightsPerDispatchClassU64, FrameSystemAccountInfo, FrameSystemEventRecord, FrameSystemLastRuntimeUpgradeInfo, FrameSystemPhase, OrmlVestingVestingSchedule, PalletBalancesAccountData, PalletBalancesBalanceLock, PalletBalancesReleases, PalletBalancesReserveData, PalletEvmAccountBasicCrossAccountIdRepr, PalletEvmContractHelpersSponsoringModeT, PalletNonfungibleItemData, PalletRefungibleItemData, PalletTransactionPaymentReleases, PalletTreasuryProposal, PhantomTypeUpDataStructs, PolkadotCorePrimitivesOutboundHrmpMessage, PolkadotPrimitivesV2AbridgedHostConfiguration, PolkadotPrimitivesV2PersistedValidationData, PolkadotPrimitivesV2UpgradeRestriction, SpRuntimeDigest, SpTrieStorageProof, UpDataStructsCollection, UpDataStructsCollectionStats, UpDataStructsProperties, UpDataStructsPropertiesMapPropertyPermission, UpDataStructsPropertyPermission, UpDataStructsTokenChild } from '@polkadot/types/lookup';
9import type { Observable } from '@polkadot/types/types';9import type { Observable } from '@polkadot/types/types';
1010
11declare module '@polkadot/api-base/types/storage' {11declare module '@polkadot/api-base/types/storage' {
88      /**88      /**
89       * Not used by code, exists only to provide some types to metadata89       * Not used by code, exists only to provide some types to metadata
90       **/90       **/
91      dummyStorageValue: AugmentedQuery<ApiType, () => Observable<Option<ITuple<[UpDataStructsCollectionStats, u32, u32, PhantomTypeUpDataStructs]>>>, []> & QueryableStorageEntry<ApiType, []>;91      dummyStorageValue: AugmentedQuery<ApiType, () => Observable<Option<ITuple<[UpDataStructsCollectionStats, u32, u32, UpDataStructsTokenChild, PhantomTypeUpDataStructs]>>>, []> & QueryableStorageEntry<ApiType, []>;
92      /**92      /**
93       * List of collection admins93       * List of collection admins
94       **/94       **/
modifiedtests/src/interfaces/augment-api-rpc.tsdiffbeforeafterboth
--- a/tests/src/interfaces/augment-api-rpc.ts
+++ b/tests/src/interfaces/augment-api-rpc.ts
@@ -1,7 +1,7 @@
 // Auto-generated via `yarn polkadot-types-from-chain`, do not edit
 /* eslint-disable */
 
-import type { PalletEvmAccountBasicCrossAccountIdRepr, UpDataStructsCollectionLimits, UpDataStructsCollectionStats, UpDataStructsProperty, UpDataStructsPropertyKeyPermission, UpDataStructsRpcCollection, UpDataStructsTokenData } from './default';
+import type { PalletEvmAccountBasicCrossAccountIdRepr, UpDataStructsCollectionLimits, UpDataStructsCollectionStats, UpDataStructsProperty, UpDataStructsPropertyKeyPermission, UpDataStructsRpcCollection, UpDataStructsTokenChild, UpDataStructsTokenData } from './default';
 import type { AugmentedRpc } from '@polkadot/rpc-core/types';
 import type { Metadata, StorageKey } from '@polkadot/types';
 import type { Bytes, HashMap, Json, Null, Option, Text, U256, U64, Vec, bool, u128, u32, u64 } from '@polkadot/types-codec';
@@ -639,6 +639,10 @@
        **/
       propertyPermissions: AugmentedRpc<(collection: u32 | AnyNumber | Uint8Array, propertyKeys?: Vec<Text> | (Text | string)[], at?: Hash | string | Uint8Array) => Observable<Vec<UpDataStructsPropertyKeyPermission>>>;
       /**
+       * Get tokens nested directly into the token
+       **/
+      tokenChildren: AugmentedRpc<(collection: u32 | AnyNumber | Uint8Array, tokenId: u32 | AnyNumber | Uint8Array, at?: Hash | string | Uint8Array) => Observable<Vec<UpDataStructsTokenChild>>>;
+      /**
        * Get token data
        **/
       tokenData: AugmentedRpc<(collection: u32 | AnyNumber | Uint8Array, tokenId: u32 | AnyNumber | Uint8Array, propertyKeys?: Vec<Text> | (Text | string)[], at?: Hash | string | Uint8Array) => Observable<UpDataStructsTokenData>>;
modifiedtests/src/interfaces/augment-types.tsdiffbeforeafterboth
--- a/tests/src/interfaces/augment-types.ts
+++ b/tests/src/interfaces/augment-types.ts
@@ -1,7 +1,7 @@
 // Auto-generated via `yarn polkadot-types-from-defs`, do not edit
 /* eslint-disable */
 
-import type { CumulusPalletDmpQueueCall, CumulusPalletDmpQueueConfigData, CumulusPalletDmpQueueError, CumulusPalletDmpQueueEvent, CumulusPalletDmpQueuePageIndexData, CumulusPalletParachainSystemCall, CumulusPalletParachainSystemError, CumulusPalletParachainSystemEvent, CumulusPalletParachainSystemRelayStateSnapshotMessagingStateSnapshot, CumulusPalletXcmCall, CumulusPalletXcmError, CumulusPalletXcmEvent, CumulusPalletXcmpQueueCall, CumulusPalletXcmpQueueError, CumulusPalletXcmpQueueEvent, CumulusPalletXcmpQueueInboundChannelDetails, CumulusPalletXcmpQueueInboundState, CumulusPalletXcmpQueueOutboundChannelDetails, CumulusPalletXcmpQueueOutboundState, CumulusPalletXcmpQueueQueueConfigData, CumulusPrimitivesParachainInherentParachainInherentData, EthbloomBloom, EthereumBlock, EthereumHeader, EthereumLog, EthereumReceiptEip658ReceiptData, EthereumReceiptReceiptV3, EthereumTransactionAccessListItem, EthereumTransactionEip1559Transaction, EthereumTransactionEip2930Transaction, EthereumTransactionLegacyTransaction, EthereumTransactionTransactionAction, EthereumTransactionTransactionSignature, EthereumTransactionTransactionV2, EthereumTypesHashH64, EvmCoreErrorExitError, EvmCoreErrorExitFatal, EvmCoreErrorExitReason, EvmCoreErrorExitRevert, EvmCoreErrorExitSucceed, FpRpcTransactionStatus, FrameSupportPalletId, FrameSupportTokensMiscBalanceStatus, FrameSupportWeightsDispatchClass, FrameSupportWeightsDispatchInfo, FrameSupportWeightsPays, FrameSupportWeightsPerDispatchClassU32, FrameSupportWeightsPerDispatchClassU64, FrameSupportWeightsPerDispatchClassWeightsPerClass, FrameSupportWeightsRuntimeDbWeight, FrameSupportWeightsWeightToFeeCoefficient, FrameSystemAccountInfo, FrameSystemCall, FrameSystemError, FrameSystemEvent, FrameSystemEventRecord, FrameSystemExtensionsCheckGenesis, FrameSystemExtensionsCheckNonce, FrameSystemExtensionsCheckSpecVersion, FrameSystemExtensionsCheckWeight, FrameSystemLastRuntimeUpgradeInfo, FrameSystemLimitsBlockLength, FrameSystemLimitsBlockWeights, FrameSystemLimitsWeightsPerClass, FrameSystemPhase, OpalRuntimeRuntime, OrmlVestingModuleCall, OrmlVestingModuleError, OrmlVestingModuleEvent, OrmlVestingVestingSchedule, PalletBalancesAccountData, PalletBalancesBalanceLock, PalletBalancesCall, PalletBalancesError, PalletBalancesEvent, PalletBalancesReasons, PalletBalancesReleases, PalletBalancesReserveData, PalletCommonError, PalletCommonEvent, PalletEthereumCall, PalletEthereumError, PalletEthereumEvent, PalletEthereumFakeTransactionFinalizer, PalletEvmAccountBasicCrossAccountIdRepr, PalletEvmCall, PalletEvmCoderSubstrateError, PalletEvmContractHelpersError, PalletEvmContractHelpersSponsoringModeT, PalletEvmError, PalletEvmEvent, PalletEvmMigrationCall, PalletEvmMigrationError, PalletFungibleError, PalletInflationCall, PalletNonfungibleError, PalletNonfungibleItemData, PalletRefungibleError, PalletRefungibleItemData, PalletStructureCall, PalletStructureError, PalletStructureEvent, PalletSudoCall, PalletSudoError, PalletSudoEvent, PalletTemplateTransactionPaymentCall, PalletTemplateTransactionPaymentChargeTransactionPayment, PalletTimestampCall, PalletTransactionPaymentReleases, PalletTreasuryCall, PalletTreasuryError, PalletTreasuryEvent, PalletTreasuryProposal, PalletUniqueCall, PalletUniqueError, PalletUniqueRawEvent, PalletXcmCall, PalletXcmError, PalletXcmEvent, PhantomTypeUpDataStructs, PolkadotCorePrimitivesInboundDownwardMessage, PolkadotCorePrimitivesInboundHrmpMessage, PolkadotCorePrimitivesOutboundHrmpMessage, PolkadotParachainPrimitivesXcmpMessageFormat, PolkadotPrimitivesV2AbridgedHostConfiguration, PolkadotPrimitivesV2AbridgedHrmpChannel, PolkadotPrimitivesV2PersistedValidationData, PolkadotPrimitivesV2UpgradeRestriction, SpCoreEcdsaSignature, SpCoreEd25519Signature, SpCoreSr25519Signature, SpRuntimeArithmeticError, SpRuntimeDigest, SpRuntimeDigestDigestItem, SpRuntimeDispatchError, SpRuntimeModuleError, SpRuntimeMultiSignature, SpRuntimeTokenError, SpRuntimeTransactionalError, SpTrieStorageProof, SpVersionRuntimeVersion, UpDataStructsAccessMode, UpDataStructsCollection, UpDataStructsCollectionLimits, UpDataStructsCollectionMode, UpDataStructsCollectionPermissions, UpDataStructsCollectionStats, UpDataStructsCreateCollectionData, UpDataStructsCreateFungibleData, UpDataStructsCreateItemData, UpDataStructsCreateItemExData, UpDataStructsCreateNftData, UpDataStructsCreateNftExData, UpDataStructsCreateReFungibleData, UpDataStructsCreateRefungibleExData, UpDataStructsNestingRule, UpDataStructsProperties, UpDataStructsPropertiesMapBoundedVec, UpDataStructsPropertiesMapPropertyPermission, UpDataStructsProperty, UpDataStructsPropertyKeyPermission, UpDataStructsPropertyPermission, UpDataStructsRmrkAccountIdOrCollectionNftTuple, UpDataStructsRmrkBaseInfo, UpDataStructsRmrkBasicResource, UpDataStructsRmrkCollectionInfo, UpDataStructsRmrkComposableResource, UpDataStructsRmrkEquippableList, UpDataStructsRmrkFixedPart, UpDataStructsRmrkNftChild, UpDataStructsRmrkNftInfo, UpDataStructsRmrkPartType, UpDataStructsRmrkPropertyInfo, UpDataStructsRmrkResourceInfo, UpDataStructsRmrkResourceTypes, UpDataStructsRmrkRoyaltyInfo, UpDataStructsRmrkSlotPart, UpDataStructsRmrkSlotResource, UpDataStructsRmrkTheme, UpDataStructsRmrkThemeProperty, UpDataStructsRpcCollection, UpDataStructsSponsoringRateLimit, UpDataStructsSponsorshipState, UpDataStructsTokenData, XcmDoubleEncoded, XcmV0Junction, XcmV0JunctionBodyId, XcmV0JunctionBodyPart, XcmV0JunctionNetworkId, XcmV0MultiAsset, XcmV0MultiLocation, XcmV0Order, XcmV0OriginKind, XcmV0Response, XcmV0Xcm, XcmV1Junction, XcmV1MultiAsset, XcmV1MultiLocation, XcmV1MultiassetAssetId, XcmV1MultiassetAssetInstance, XcmV1MultiassetFungibility, XcmV1MultiassetMultiAssetFilter, XcmV1MultiassetMultiAssets, XcmV1MultiassetWildFungibility, XcmV1MultiassetWildMultiAsset, XcmV1MultilocationJunctions, XcmV1Order, XcmV1Response, XcmV1Xcm, XcmV2Instruction, XcmV2Response, XcmV2TraitsError, XcmV2TraitsOutcome, XcmV2WeightLimit, XcmV2Xcm, XcmVersionedMultiAssets, XcmVersionedMultiLocation, XcmVersionedXcm } from './default';
+import type { CumulusPalletDmpQueueCall, CumulusPalletDmpQueueConfigData, CumulusPalletDmpQueueError, CumulusPalletDmpQueueEvent, CumulusPalletDmpQueuePageIndexData, CumulusPalletParachainSystemCall, CumulusPalletParachainSystemError, CumulusPalletParachainSystemEvent, CumulusPalletParachainSystemRelayStateSnapshotMessagingStateSnapshot, CumulusPalletXcmCall, CumulusPalletXcmError, CumulusPalletXcmEvent, CumulusPalletXcmpQueueCall, CumulusPalletXcmpQueueError, CumulusPalletXcmpQueueEvent, CumulusPalletXcmpQueueInboundChannelDetails, CumulusPalletXcmpQueueInboundState, CumulusPalletXcmpQueueOutboundChannelDetails, CumulusPalletXcmpQueueOutboundState, CumulusPalletXcmpQueueQueueConfigData, CumulusPrimitivesParachainInherentParachainInherentData, EthbloomBloom, EthereumBlock, EthereumHeader, EthereumLog, EthereumReceiptEip658ReceiptData, EthereumReceiptReceiptV3, EthereumTransactionAccessListItem, EthereumTransactionEip1559Transaction, EthereumTransactionEip2930Transaction, EthereumTransactionLegacyTransaction, EthereumTransactionTransactionAction, EthereumTransactionTransactionSignature, EthereumTransactionTransactionV2, EthereumTypesHashH64, EvmCoreErrorExitError, EvmCoreErrorExitFatal, EvmCoreErrorExitReason, EvmCoreErrorExitRevert, EvmCoreErrorExitSucceed, FpRpcTransactionStatus, FrameSupportPalletId, FrameSupportTokensMiscBalanceStatus, FrameSupportWeightsDispatchClass, FrameSupportWeightsDispatchInfo, FrameSupportWeightsPays, FrameSupportWeightsPerDispatchClassU32, FrameSupportWeightsPerDispatchClassU64, FrameSupportWeightsPerDispatchClassWeightsPerClass, FrameSupportWeightsRuntimeDbWeight, FrameSupportWeightsWeightToFeeCoefficient, FrameSystemAccountInfo, FrameSystemCall, FrameSystemError, FrameSystemEvent, FrameSystemEventRecord, FrameSystemExtensionsCheckGenesis, FrameSystemExtensionsCheckNonce, FrameSystemExtensionsCheckSpecVersion, FrameSystemExtensionsCheckWeight, FrameSystemLastRuntimeUpgradeInfo, FrameSystemLimitsBlockLength, FrameSystemLimitsBlockWeights, FrameSystemLimitsWeightsPerClass, FrameSystemPhase, OpalRuntimeRuntime, OrmlVestingModuleCall, OrmlVestingModuleError, OrmlVestingModuleEvent, OrmlVestingVestingSchedule, PalletBalancesAccountData, PalletBalancesBalanceLock, PalletBalancesCall, PalletBalancesError, PalletBalancesEvent, PalletBalancesReasons, PalletBalancesReleases, PalletBalancesReserveData, PalletCommonError, PalletCommonEvent, PalletEthereumCall, PalletEthereumError, PalletEthereumEvent, PalletEthereumFakeTransactionFinalizer, PalletEvmAccountBasicCrossAccountIdRepr, PalletEvmCall, PalletEvmCoderSubstrateError, PalletEvmContractHelpersError, PalletEvmContractHelpersSponsoringModeT, PalletEvmError, PalletEvmEvent, PalletEvmMigrationCall, PalletEvmMigrationError, PalletFungibleError, PalletInflationCall, PalletNonfungibleError, PalletNonfungibleItemData, PalletRefungibleError, PalletRefungibleItemData, PalletStructureCall, PalletStructureError, PalletStructureEvent, PalletSudoCall, PalletSudoError, PalletSudoEvent, PalletTemplateTransactionPaymentCall, PalletTemplateTransactionPaymentChargeTransactionPayment, PalletTimestampCall, PalletTransactionPaymentReleases, PalletTreasuryCall, PalletTreasuryError, PalletTreasuryEvent, PalletTreasuryProposal, PalletUniqueCall, PalletUniqueError, PalletUniqueRawEvent, PalletXcmCall, PalletXcmError, PalletXcmEvent, PhantomTypeUpDataStructs, PolkadotCorePrimitivesInboundDownwardMessage, PolkadotCorePrimitivesInboundHrmpMessage, PolkadotCorePrimitivesOutboundHrmpMessage, PolkadotParachainPrimitivesXcmpMessageFormat, PolkadotPrimitivesV2AbridgedHostConfiguration, PolkadotPrimitivesV2AbridgedHrmpChannel, PolkadotPrimitivesV2PersistedValidationData, PolkadotPrimitivesV2UpgradeRestriction, SpCoreEcdsaSignature, SpCoreEd25519Signature, SpCoreSr25519Signature, SpRuntimeArithmeticError, SpRuntimeDigest, SpRuntimeDigestDigestItem, SpRuntimeDispatchError, SpRuntimeModuleError, SpRuntimeMultiSignature, SpRuntimeTokenError, SpRuntimeTransactionalError, SpTrieStorageProof, SpVersionRuntimeVersion, UpDataStructsAccessMode, UpDataStructsCollection, UpDataStructsCollectionLimits, UpDataStructsCollectionMode, UpDataStructsCollectionPermissions, UpDataStructsCollectionStats, UpDataStructsCreateCollectionData, UpDataStructsCreateFungibleData, UpDataStructsCreateItemData, UpDataStructsCreateItemExData, UpDataStructsCreateNftData, UpDataStructsCreateNftExData, UpDataStructsCreateReFungibleData, UpDataStructsCreateRefungibleExData, UpDataStructsNestingRule, UpDataStructsProperties, UpDataStructsPropertiesMapBoundedVec, UpDataStructsPropertiesMapPropertyPermission, UpDataStructsProperty, UpDataStructsPropertyKeyPermission, UpDataStructsPropertyPermission, UpDataStructsRmrkAccountIdOrCollectionNftTuple, UpDataStructsRmrkBaseInfo, UpDataStructsRmrkBasicResource, UpDataStructsRmrkCollectionInfo, UpDataStructsRmrkComposableResource, UpDataStructsRmrkEquippableList, UpDataStructsRmrkFixedPart, UpDataStructsRmrkNftChild, UpDataStructsRmrkNftInfo, UpDataStructsRmrkPartType, UpDataStructsRmrkPropertyInfo, UpDataStructsRmrkResourceInfo, UpDataStructsRmrkResourceTypes, UpDataStructsRmrkRoyaltyInfo, UpDataStructsRmrkSlotPart, UpDataStructsRmrkSlotResource, UpDataStructsRmrkTheme, UpDataStructsRmrkThemeProperty, UpDataStructsRpcCollection, UpDataStructsSponsoringRateLimit, UpDataStructsSponsorshipState, UpDataStructsTokenChild, UpDataStructsTokenData, XcmDoubleEncoded, XcmV0Junction, XcmV0JunctionBodyId, XcmV0JunctionBodyPart, XcmV0JunctionNetworkId, XcmV0MultiAsset, XcmV0MultiLocation, XcmV0Order, XcmV0OriginKind, XcmV0Response, XcmV0Xcm, XcmV1Junction, XcmV1MultiAsset, XcmV1MultiLocation, XcmV1MultiassetAssetId, XcmV1MultiassetAssetInstance, XcmV1MultiassetFungibility, XcmV1MultiassetMultiAssetFilter, XcmV1MultiassetMultiAssets, XcmV1MultiassetWildFungibility, XcmV1MultiassetWildMultiAsset, XcmV1MultilocationJunctions, XcmV1Order, XcmV1Response, XcmV1Xcm, XcmV2Instruction, XcmV2Response, XcmV2TraitsError, XcmV2TraitsOutcome, XcmV2WeightLimit, XcmV2Xcm, XcmVersionedMultiAssets, XcmVersionedMultiLocation, XcmVersionedXcm } from './default';
 import type { Data, StorageKey } from '@polkadot/types';
 import type { BitVec, Bool, Bytes, I128, I16, I256, I32, I64, I8, Json, Null, OptionBool, Raw, Text, Type, U128, U16, U256, U32, U64, U8, USize, bool, i128, i16, i256, i32, i64, i8, u128, u16, u256, u32, u64, u8, usize } from '@polkadot/types-codec';
 import type { AssetApproval, AssetApprovalKey, AssetBalance, AssetDestroyWitness, AssetDetails, AssetMetadata, TAssetBalance, TAssetDepositBalance } from '@polkadot/types/interfaces/assets';
@@ -1210,6 +1210,7 @@
     UpDataStructsRpcCollection: UpDataStructsRpcCollection;
     UpDataStructsSponsoringRateLimit: UpDataStructsSponsoringRateLimit;
     UpDataStructsSponsorshipState: UpDataStructsSponsorshipState;
+    UpDataStructsTokenChild: UpDataStructsTokenChild;
     UpDataStructsTokenData: UpDataStructsTokenData;
     UpgradeGoAhead: UpgradeGoAhead;
     UpgradeRestriction: UpgradeRestriction;
modifiedtests/src/interfaces/default/types.tsdiffbeforeafterboth
--- a/tests/src/interfaces/default/types.ts
+++ b/tests/src/interfaces/default/types.ts
@@ -1588,7 +1588,7 @@
 }
 
 /** @name PhantomTypeUpDataStructs */
-export interface PhantomTypeUpDataStructs extends Vec<ITuple<[UpDataStructsTokenData, UpDataStructsRpcCollection, PalletEvmAccountBasicCrossAccountIdRepr, UpDataStructsRmrkCollectionInfo, UpDataStructsRmrkNftInfo, UpDataStructsRmrkResourceInfo, UpDataStructsRmrkPropertyInfo, UpDataStructsRmrkBaseInfo, UpDataStructsRmrkPartType, UpDataStructsRmrkTheme, UpDataStructsRmrkNftChild]>> {}
+export interface PhantomTypeUpDataStructs extends Vec<ITuple<[UpDataStructsTokenData, UpDataStructsRpcCollection, UpDataStructsRmrkCollectionInfo, UpDataStructsRmrkNftInfo, UpDataStructsRmrkResourceInfo, UpDataStructsRmrkPropertyInfo, UpDataStructsRmrkBaseInfo, UpDataStructsRmrkPartType, UpDataStructsRmrkTheme, UpDataStructsRmrkNftChild]>> {}
 
 /** @name PolkadotCorePrimitivesInboundDownwardMessage */
 export interface PolkadotCorePrimitivesInboundDownwardMessage extends Struct {
@@ -1861,7 +1861,6 @@
 
 /** @name UpDataStructsCreateNftData */
 export interface UpDataStructsCreateNftData extends Struct {
-  readonly constData: Bytes;
   readonly properties: Vec<UpDataStructsProperty>;
 }
 
@@ -2101,6 +2100,12 @@
   readonly type: 'Disabled' | 'Unconfirmed' | 'Confirmed';
 }
 
+/** @name UpDataStructsTokenChild */
+export interface UpDataStructsTokenChild extends Struct {
+  readonly token: u32;
+  readonly collection: u32;
+}
+
 /** @name UpDataStructsTokenData */
 export interface UpDataStructsTokenData extends Struct {
   readonly properties: Vec<UpDataStructsProperty>;
modifiedtests/src/interfaces/lookup.tsdiffbeforeafterboth
--- a/tests/src/interfaces/lookup.ts
+++ b/tests/src/interfaces/lookup.ts
@@ -1479,17 +1479,16 @@
    * Lookup186: up_data_structs::CreateNftData
    **/
   UpDataStructsCreateNftData: {
-    constData: 'Bytes',
     properties: 'Vec<UpDataStructsProperty>'
   },
   /**
-   * Lookup188: up_data_structs::CreateFungibleData
+   * Lookup187: up_data_structs::CreateFungibleData
    **/
   UpDataStructsCreateFungibleData: {
     value: 'u128'
   },
   /**
-   * Lookup189: up_data_structs::CreateReFungibleData
+   * Lookup188: up_data_structs::CreateReFungibleData
    **/
   UpDataStructsCreateReFungibleData: {
     constData: 'Bytes',
@@ -2282,18 +2281,25 @@
     alive: 'u32'
   },
   /**
-   * Lookup323: PhantomType::up_data_structs<T>
+   * Lookup323: up_data_structs::TokenChild
    **/
-  PhantomTypeUpDataStructs: '[(UpDataStructsTokenData,UpDataStructsRpcCollection,PalletEvmAccountBasicCrossAccountIdRepr,UpDataStructsRmrkCollectionInfo,UpDataStructsRmrkNftInfo,UpDataStructsRmrkResourceInfo,UpDataStructsRmrkPropertyInfo,UpDataStructsRmrkBaseInfo,UpDataStructsRmrkPartType,UpDataStructsRmrkTheme,UpDataStructsRmrkNftChild);0]',
+  UpDataStructsTokenChild: {
+    token: 'u32',
+    collection: 'u32'
+  },
+  /**
+   * Lookup324: PhantomType::up_data_structs<T>
+   **/
+  PhantomTypeUpDataStructs: '[(UpDataStructsTokenData,UpDataStructsRpcCollection,UpDataStructsRmrkCollectionInfo,UpDataStructsRmrkNftInfo,UpDataStructsRmrkResourceInfo,UpDataStructsRmrkPropertyInfo,UpDataStructsRmrkBaseInfo,UpDataStructsRmrkPartType,UpDataStructsRmrkTheme,UpDataStructsRmrkNftChild);0]',
   /**
-   * Lookup325: up_data_structs::TokenData<pallet_evm::account::BasicCrossAccountIdRepr<sp_core::crypto::AccountId32>>
+   * Lookup326: up_data_structs::TokenData<pallet_evm::account::BasicCrossAccountIdRepr<sp_core::crypto::AccountId32>>
    **/
   UpDataStructsTokenData: {
     properties: 'Vec<UpDataStructsProperty>',
     owner: 'Option<PalletEvmAccountBasicCrossAccountIdRepr>'
   },
   /**
-   * Lookup327: up_data_structs::RpcCollection<sp_core::crypto::AccountId32>
+   * Lookup328: up_data_structs::RpcCollection<sp_core::crypto::AccountId32>
    **/
   UpDataStructsRpcCollection: {
     owner: 'AccountId32',
@@ -2308,7 +2314,7 @@
     properties: 'Vec<UpDataStructsProperty>'
   },
   /**
-   * Lookup328: up_data_structs::rmrk::CollectionInfo<frame_support::storage::bounded_vec::BoundedVec<T, S>, frame_support::storage::bounded_vec::BoundedVec<T, S>, sp_core::crypto::AccountId32>
+   * Lookup329: up_data_structs::rmrk::CollectionInfo<frame_support::storage::bounded_vec::BoundedVec<T, S>, frame_support::storage::bounded_vec::BoundedVec<T, S>, sp_core::crypto::AccountId32>
    **/
   UpDataStructsRmrkCollectionInfo: {
     issuer: 'AccountId32',
@@ -2318,7 +2324,7 @@
     nftsCount: 'u32'
   },
   /**
-   * Lookup331: up_data_structs::rmrk::NftInfo<sp_core::crypto::AccountId32, sp_arithmetic::per_things::Permill, frame_support::storage::bounded_vec::BoundedVec<T, S>>
+   * Lookup332: up_data_structs::rmrk::NftInfo<sp_core::crypto::AccountId32, sp_arithmetic::per_things::Permill, frame_support::storage::bounded_vec::BoundedVec<T, S>>
    **/
   UpDataStructsRmrkNftInfo: {
     owner: 'UpDataStructsRmrkAccountIdOrCollectionNftTuple',
@@ -2328,7 +2334,7 @@
     pending: 'bool'
   },
   /**
-   * Lookup332: up_data_structs::rmrk::AccountIdOrCollectionNftTuple<sp_core::crypto::AccountId32>
+   * Lookup333: up_data_structs::rmrk::AccountIdOrCollectionNftTuple<sp_core::crypto::AccountId32>
    **/
   UpDataStructsRmrkAccountIdOrCollectionNftTuple: {
     _enum: {
@@ -2337,14 +2343,14 @@
     }
   },
   /**
-   * Lookup334: up_data_structs::rmrk::RoyaltyInfo<sp_core::crypto::AccountId32, sp_arithmetic::per_things::Permill>
+   * Lookup335: up_data_structs::rmrk::RoyaltyInfo<sp_core::crypto::AccountId32, sp_arithmetic::per_things::Permill>
    **/
   UpDataStructsRmrkRoyaltyInfo: {
     recipient: 'AccountId32',
     amount: 'Permill'
   },
   /**
-   * Lookup335: up_data_structs::rmrk::ResourceInfo<frame_support::storage::bounded_vec::BoundedVec<T, S>, frame_support::storage::bounded_vec::BoundedVec<T, S>, frame_support::storage::bounded_vec::BoundedVec<T, S>>
+   * Lookup336: up_data_structs::rmrk::ResourceInfo<frame_support::storage::bounded_vec::BoundedVec<T, S>, frame_support::storage::bounded_vec::BoundedVec<T, S>, frame_support::storage::bounded_vec::BoundedVec<T, S>>
    **/
   UpDataStructsRmrkResourceInfo: {
     id: 'Bytes',
@@ -2353,7 +2359,7 @@
     pendingRemoval: 'bool'
   },
   /**
-   * Lookup338: up_data_structs::rmrk::ResourceTypes<frame_support::storage::bounded_vec::BoundedVec<T, S>, frame_support::storage::bounded_vec::BoundedVec<T, S>>
+   * Lookup339: up_data_structs::rmrk::ResourceTypes<frame_support::storage::bounded_vec::BoundedVec<T, S>, frame_support::storage::bounded_vec::BoundedVec<T, S>>
    **/
   UpDataStructsRmrkResourceTypes: {
     _enum: {
@@ -2363,7 +2369,7 @@
     }
   },
   /**
-   * Lookup339: up_data_structs::rmrk::BasicResource<frame_support::storage::bounded_vec::BoundedVec<T, S>>
+   * Lookup340: up_data_structs::rmrk::BasicResource<frame_support::storage::bounded_vec::BoundedVec<T, S>>
    **/
   UpDataStructsRmrkBasicResource: {
     src: 'Option<Bytes>',
@@ -2372,7 +2378,7 @@
     thumb: 'Option<Bytes>'
   },
   /**
-   * Lookup341: up_data_structs::rmrk::ComposableResource<frame_support::storage::bounded_vec::BoundedVec<T, S>, frame_support::storage::bounded_vec::BoundedVec<T, S>>
+   * Lookup342: up_data_structs::rmrk::ComposableResource<frame_support::storage::bounded_vec::BoundedVec<T, S>, frame_support::storage::bounded_vec::BoundedVec<T, S>>
    **/
   UpDataStructsRmrkComposableResource: {
     parts: 'Vec<u32>',
@@ -2383,7 +2389,7 @@
     thumb: 'Option<Bytes>'
   },
   /**
-   * Lookup342: up_data_structs::rmrk::SlotResource<frame_support::storage::bounded_vec::BoundedVec<T, S>>
+   * Lookup343: up_data_structs::rmrk::SlotResource<frame_support::storage::bounded_vec::BoundedVec<T, S>>
    **/
   UpDataStructsRmrkSlotResource: {
     base: 'u32',
@@ -2394,14 +2400,14 @@
     thumb: 'Option<Bytes>'
   },
   /**
-   * Lookup343: up_data_structs::rmrk::PropertyInfo<frame_support::storage::bounded_vec::BoundedVec<T, S>, frame_support::storage::bounded_vec::BoundedVec<T, S>>
+   * Lookup344: up_data_structs::rmrk::PropertyInfo<frame_support::storage::bounded_vec::BoundedVec<T, S>, frame_support::storage::bounded_vec::BoundedVec<T, S>>
    **/
   UpDataStructsRmrkPropertyInfo: {
     key: 'Bytes',
     value: 'Bytes'
   },
   /**
-   * Lookup346: up_data_structs::rmrk::BaseInfo<sp_core::crypto::AccountId32, frame_support::storage::bounded_vec::BoundedVec<T, S>>
+   * Lookup347: up_data_structs::rmrk::BaseInfo<sp_core::crypto::AccountId32, frame_support::storage::bounded_vec::BoundedVec<T, S>>
    **/
   UpDataStructsRmrkBaseInfo: {
     issuer: 'AccountId32',
@@ -2409,7 +2415,7 @@
     symbol: 'Bytes'
   },
   /**
-   * Lookup347: up_data_structs::rmrk::PartType<frame_support::storage::bounded_vec::BoundedVec<T, S>, frame_support::storage::bounded_vec::BoundedVec<T, S>>
+   * Lookup348: up_data_structs::rmrk::PartType<frame_support::storage::bounded_vec::BoundedVec<T, S>, frame_support::storage::bounded_vec::BoundedVec<T, S>>
    **/
   UpDataStructsRmrkPartType: {
     _enum: {
@@ -2418,7 +2424,7 @@
     }
   },
   /**
-   * Lookup349: up_data_structs::rmrk::FixedPart<frame_support::storage::bounded_vec::BoundedVec<T, S>>
+   * Lookup350: up_data_structs::rmrk::FixedPart<frame_support::storage::bounded_vec::BoundedVec<T, S>>
    **/
   UpDataStructsRmrkFixedPart: {
     id: 'u32',
@@ -2426,7 +2432,7 @@
     src: 'Bytes'
   },
   /**
-   * Lookup350: up_data_structs::rmrk::SlotPart<frame_support::storage::bounded_vec::BoundedVec<T, S>, frame_support::storage::bounded_vec::BoundedVec<T, S>>
+   * Lookup351: up_data_structs::rmrk::SlotPart<frame_support::storage::bounded_vec::BoundedVec<T, S>, frame_support::storage::bounded_vec::BoundedVec<T, S>>
    **/
   UpDataStructsRmrkSlotPart: {
     id: 'u32',
@@ -2435,7 +2441,7 @@
     z: 'u32'
   },
   /**
-   * Lookup351: up_data_structs::rmrk::EquippableList<frame_support::storage::bounded_vec::BoundedVec<T, S>>
+   * Lookup352: up_data_structs::rmrk::EquippableList<frame_support::storage::bounded_vec::BoundedVec<T, S>>
    **/
   UpDataStructsRmrkEquippableList: {
     _enum: {
@@ -2445,7 +2451,7 @@
     }
   },
   /**
-   * Lookup352: up_data_structs::rmrk::Theme<frame_support::storage::bounded_vec::BoundedVec<T, S>, PropertyList>
+   * Lookup353: up_data_structs::rmrk::Theme<frame_support::storage::bounded_vec::BoundedVec<T, S>, PropertyList>
    **/
   UpDataStructsRmrkTheme: {
     name: 'Bytes',
@@ -2453,69 +2459,69 @@
     inherit: 'bool'
   },
   /**
-   * Lookup354: up_data_structs::rmrk::ThemeProperty<frame_support::storage::bounded_vec::BoundedVec<T, S>>
+   * Lookup355: up_data_structs::rmrk::ThemeProperty<frame_support::storage::bounded_vec::BoundedVec<T, S>>
    **/
   UpDataStructsRmrkThemeProperty: {
     key: 'Bytes',
     value: 'Bytes'
   },
   /**
-   * Lookup355: up_data_structs::rmrk::NftChild
+   * Lookup356: up_data_structs::rmrk::NftChild
    **/
   UpDataStructsRmrkNftChild: {
     collectionId: 'u32',
     nftId: 'u32'
   },
   /**
-   * Lookup357: pallet_common::pallet::Error<T>
+   * Lookup358: pallet_common::pallet::Error<T>
    **/
   PalletCommonError: {
     _enum: ['CollectionNotFound', 'MustBeTokenOwner', 'NoPermission', 'CantDestroyNotEmptyCollection', 'PublicMintingNotAllowed', 'AddressNotInAllowlist', 'CollectionNameLimitExceeded', 'CollectionDescriptionLimitExceeded', 'CollectionTokenPrefixLimitExceeded', 'TotalCollectionsLimitExceeded', 'CollectionAdminCountExceeded', 'CollectionLimitBoundsExceeded', 'OwnerPermissionsCantBeReverted', 'TransferNotAllowed', 'AccountTokenLimitExceeded', 'CollectionTokenLimitExceeded', 'MetadataFlagFrozen', 'TokenNotFound', 'TokenValueTooLow', 'ApprovedValueTooLow', 'CantApproveMoreThanOwned', 'AddressIsZero', 'UnsupportedOperation', 'NotSufficientFounds', 'NestingIsDisabled', 'OnlyOwnerAllowedToNest', 'SourceCollectionIsNotAllowedToNest', 'CollectionFieldSizeExceeded', 'NoSpaceForProperty', 'PropertyLimitReached', 'PropertyKeyIsTooLong', 'InvalidCharacterInPropertyKey', 'EmptyPropertyKey']
   },
   /**
-   * Lookup359: pallet_fungible::pallet::Error<T>
+   * Lookup360: pallet_fungible::pallet::Error<T>
    **/
   PalletFungibleError: {
     _enum: ['NotFungibleDataUsedToMintFungibleCollectionToken', 'FungibleItemsHaveNoId', 'FungibleItemsDontHaveData', 'FungibleDisallowsNesting', 'SettingPropertiesNotAllowed']
   },
   /**
-   * Lookup360: pallet_refungible::ItemData
+   * Lookup361: pallet_refungible::ItemData
    **/
   PalletRefungibleItemData: {
     constData: 'Bytes'
   },
   /**
-   * Lookup364: pallet_refungible::pallet::Error<T>
+   * Lookup365: pallet_refungible::pallet::Error<T>
    **/
   PalletRefungibleError: {
     _enum: ['NotRefungibleDataUsedToMintFungibleCollectionToken', 'WrongRefungiblePieces', 'RefungibleDisallowsNesting', 'SettingPropertiesNotAllowed']
   },
   /**
-   * Lookup365: pallet_nonfungible::ItemData<pallet_evm::account::BasicCrossAccountIdRepr<sp_core::crypto::AccountId32>>
+   * Lookup366: pallet_nonfungible::ItemData<pallet_evm::account::BasicCrossAccountIdRepr<sp_core::crypto::AccountId32>>
    **/
   PalletNonfungibleItemData: {
     owner: 'PalletEvmAccountBasicCrossAccountIdRepr'
   },
   /**
-   * Lookup367: pallet_nonfungible::pallet::Error<T>
+   * Lookup368: pallet_nonfungible::pallet::Error<T>
    **/
   PalletNonfungibleError: {
     _enum: ['NotNonfungibleDataUsedToMintFungibleCollectionToken', 'NonfungibleItemsHaveNoAmount', 'CantBurnNftWithChildren']
   },
   /**
-   * Lookup368: pallet_structure::pallet::Error<T>
+   * Lookup369: pallet_structure::pallet::Error<T>
    **/
   PalletStructureError: {
     _enum: ['OuroborosDetected', 'DepthLimit', 'TokenNotFound']
   },
   /**
-   * Lookup371: pallet_evm::pallet::Error<T>
+   * Lookup372: pallet_evm::pallet::Error<T>
    **/
   PalletEvmError: {
     _enum: ['BalanceLow', 'FeeOverflow', 'PaymentOverflow', 'WithdrawFailed', 'GasPriceTooLow', 'InvalidNonce']
   },
   /**
-   * Lookup374: fp_rpc::TransactionStatus
+   * Lookup375: fp_rpc::TransactionStatus
    **/
   FpRpcTransactionStatus: {
     transactionHash: 'H256',
@@ -2527,11 +2533,11 @@
     logsBloom: 'EthbloomBloom'
   },
   /**
-   * Lookup376: ethbloom::Bloom
+   * Lookup377: ethbloom::Bloom
    **/
   EthbloomBloom: '[u8;256]',
   /**
-   * Lookup378: ethereum::receipt::ReceiptV3
+   * Lookup379: ethereum::receipt::ReceiptV3
    **/
   EthereumReceiptReceiptV3: {
     _enum: {
@@ -2541,7 +2547,7 @@
     }
   },
   /**
-   * Lookup379: ethereum::receipt::EIP658ReceiptData
+   * Lookup380: ethereum::receipt::EIP658ReceiptData
    **/
   EthereumReceiptEip658ReceiptData: {
     statusCode: 'u8',
@@ -2550,7 +2556,7 @@
     logs: 'Vec<EthereumLog>'
   },
   /**
-   * Lookup380: ethereum::block::Block<ethereum::transaction::TransactionV2>
+   * Lookup381: ethereum::block::Block<ethereum::transaction::TransactionV2>
    **/
   EthereumBlock: {
     header: 'EthereumHeader',
@@ -2558,7 +2564,7 @@
     ommers: 'Vec<EthereumHeader>'
   },
   /**
-   * Lookup381: ethereum::header::Header
+   * Lookup382: ethereum::header::Header
    **/
   EthereumHeader: {
     parentHash: 'H256',
@@ -2578,41 +2584,41 @@
     nonce: 'EthereumTypesHashH64'
   },
   /**
-   * Lookup382: ethereum_types::hash::H64
+   * Lookup383: ethereum_types::hash::H64
    **/
   EthereumTypesHashH64: '[u8;8]',
   /**
-   * Lookup387: pallet_ethereum::pallet::Error<T>
+   * Lookup388: pallet_ethereum::pallet::Error<T>
    **/
   PalletEthereumError: {
     _enum: ['InvalidSignature', 'PreLogExists']
   },
   /**
-   * Lookup388: pallet_evm_coder_substrate::pallet::Error<T>
+   * Lookup389: pallet_evm_coder_substrate::pallet::Error<T>
    **/
   PalletEvmCoderSubstrateError: {
     _enum: ['OutOfGas', 'OutOfFund']
   },
   /**
-   * Lookup389: pallet_evm_contract_helpers::SponsoringModeT
+   * Lookup390: pallet_evm_contract_helpers::SponsoringModeT
    **/
   PalletEvmContractHelpersSponsoringModeT: {
     _enum: ['Disabled', 'Allowlisted', 'Generous']
   },
   /**
-   * Lookup391: pallet_evm_contract_helpers::pallet::Error<T>
+   * Lookup392: pallet_evm_contract_helpers::pallet::Error<T>
    **/
   PalletEvmContractHelpersError: {
     _enum: ['NoPermission']
   },
   /**
-   * Lookup392: pallet_evm_migration::pallet::Error<T>
+   * Lookup393: pallet_evm_migration::pallet::Error<T>
    **/
   PalletEvmMigrationError: {
     _enum: ['AccountNotEmpty', 'AccountIsNotMigrating']
   },
   /**
-   * Lookup394: sp_runtime::MultiSignature
+   * Lookup395: sp_runtime::MultiSignature
    **/
   SpRuntimeMultiSignature: {
     _enum: {
@@ -2622,43 +2628,43 @@
     }
   },
   /**
-   * Lookup395: sp_core::ed25519::Signature
+   * Lookup396: sp_core::ed25519::Signature
    **/
   SpCoreEd25519Signature: '[u8;64]',
   /**
-   * Lookup397: sp_core::sr25519::Signature
+   * Lookup398: sp_core::sr25519::Signature
    **/
   SpCoreSr25519Signature: '[u8;64]',
   /**
-   * Lookup398: sp_core::ecdsa::Signature
+   * Lookup399: sp_core::ecdsa::Signature
    **/
   SpCoreEcdsaSignature: '[u8;65]',
   /**
-   * Lookup401: frame_system::extensions::check_spec_version::CheckSpecVersion<T>
+   * Lookup402: frame_system::extensions::check_spec_version::CheckSpecVersion<T>
    **/
   FrameSystemExtensionsCheckSpecVersion: 'Null',
   /**
-   * Lookup402: frame_system::extensions::check_genesis::CheckGenesis<T>
+   * Lookup403: frame_system::extensions::check_genesis::CheckGenesis<T>
    **/
   FrameSystemExtensionsCheckGenesis: 'Null',
   /**
-   * Lookup405: frame_system::extensions::check_nonce::CheckNonce<T>
+   * Lookup406: frame_system::extensions::check_nonce::CheckNonce<T>
    **/
   FrameSystemExtensionsCheckNonce: 'Compact<u32>',
   /**
-   * Lookup406: frame_system::extensions::check_weight::CheckWeight<T>
+   * Lookup407: frame_system::extensions::check_weight::CheckWeight<T>
    **/
   FrameSystemExtensionsCheckWeight: 'Null',
   /**
-   * Lookup407: pallet_template_transaction_payment::ChargeTransactionPayment<opal_runtime::Runtime>
+   * Lookup408: pallet_template_transaction_payment::ChargeTransactionPayment<opal_runtime::Runtime>
    **/
   PalletTemplateTransactionPaymentChargeTransactionPayment: 'Compact<u128>',
   /**
-   * Lookup408: opal_runtime::Runtime
+   * Lookup409: opal_runtime::Runtime
    **/
   OpalRuntimeRuntime: 'Null',
   /**
-   * Lookup409: pallet_ethereum::FakeTransactionFinalizer<opal_runtime::Runtime>
+   * Lookup410: pallet_ethereum::FakeTransactionFinalizer<opal_runtime::Runtime>
    **/
   PalletEthereumFakeTransactionFinalizer: 'Null'
 };
modifiedtests/src/interfaces/registry.tsdiffbeforeafterboth
--- a/tests/src/interfaces/registry.ts
+++ b/tests/src/interfaces/registry.ts
@@ -1,7 +1,7 @@
 // Auto-generated via `yarn polkadot-types-from-defs`, do not edit
 /* eslint-disable */
 
-import type { CumulusPalletDmpQueueCall, CumulusPalletDmpQueueConfigData, CumulusPalletDmpQueueError, CumulusPalletDmpQueueEvent, CumulusPalletDmpQueuePageIndexData, CumulusPalletParachainSystemCall, CumulusPalletParachainSystemError, CumulusPalletParachainSystemEvent, CumulusPalletParachainSystemRelayStateSnapshotMessagingStateSnapshot, CumulusPalletXcmCall, CumulusPalletXcmError, CumulusPalletXcmEvent, CumulusPalletXcmpQueueCall, CumulusPalletXcmpQueueError, CumulusPalletXcmpQueueEvent, CumulusPalletXcmpQueueInboundChannelDetails, CumulusPalletXcmpQueueInboundState, CumulusPalletXcmpQueueOutboundChannelDetails, CumulusPalletXcmpQueueOutboundState, CumulusPalletXcmpQueueQueueConfigData, CumulusPrimitivesParachainInherentParachainInherentData, EthbloomBloom, EthereumBlock, EthereumHeader, EthereumLog, EthereumReceiptEip658ReceiptData, EthereumReceiptReceiptV3, EthereumTransactionAccessListItem, EthereumTransactionEip1559Transaction, EthereumTransactionEip2930Transaction, EthereumTransactionLegacyTransaction, EthereumTransactionTransactionAction, EthereumTransactionTransactionSignature, EthereumTransactionTransactionV2, EthereumTypesHashH64, EvmCoreErrorExitError, EvmCoreErrorExitFatal, EvmCoreErrorExitReason, EvmCoreErrorExitRevert, EvmCoreErrorExitSucceed, FpRpcTransactionStatus, FrameSupportPalletId, FrameSupportTokensMiscBalanceStatus, FrameSupportWeightsDispatchClass, FrameSupportWeightsDispatchInfo, FrameSupportWeightsPays, FrameSupportWeightsPerDispatchClassU32, FrameSupportWeightsPerDispatchClassU64, FrameSupportWeightsPerDispatchClassWeightsPerClass, FrameSupportWeightsRuntimeDbWeight, FrameSupportWeightsWeightToFeeCoefficient, FrameSystemAccountInfo, FrameSystemCall, FrameSystemError, FrameSystemEvent, FrameSystemEventRecord, FrameSystemExtensionsCheckGenesis, FrameSystemExtensionsCheckNonce, FrameSystemExtensionsCheckSpecVersion, FrameSystemExtensionsCheckWeight, FrameSystemLastRuntimeUpgradeInfo, FrameSystemLimitsBlockLength, FrameSystemLimitsBlockWeights, FrameSystemLimitsWeightsPerClass, FrameSystemPhase, OpalRuntimeRuntime, OrmlVestingModuleCall, OrmlVestingModuleError, OrmlVestingModuleEvent, OrmlVestingVestingSchedule, PalletBalancesAccountData, PalletBalancesBalanceLock, PalletBalancesCall, PalletBalancesError, PalletBalancesEvent, PalletBalancesReasons, PalletBalancesReleases, PalletBalancesReserveData, PalletCommonError, PalletCommonEvent, PalletEthereumCall, PalletEthereumError, PalletEthereumEvent, PalletEthereumFakeTransactionFinalizer, PalletEvmAccountBasicCrossAccountIdRepr, PalletEvmCall, PalletEvmCoderSubstrateError, PalletEvmContractHelpersError, PalletEvmContractHelpersSponsoringModeT, PalletEvmError, PalletEvmEvent, PalletEvmMigrationCall, PalletEvmMigrationError, PalletFungibleError, PalletInflationCall, PalletNonfungibleError, PalletNonfungibleItemData, PalletRefungibleError, PalletRefungibleItemData, PalletStructureCall, PalletStructureError, PalletStructureEvent, PalletSudoCall, PalletSudoError, PalletSudoEvent, PalletTemplateTransactionPaymentCall, PalletTemplateTransactionPaymentChargeTransactionPayment, PalletTimestampCall, PalletTransactionPaymentReleases, PalletTreasuryCall, PalletTreasuryError, PalletTreasuryEvent, PalletTreasuryProposal, PalletUniqueCall, PalletUniqueError, PalletUniqueRawEvent, PalletXcmCall, PalletXcmError, PalletXcmEvent, PhantomTypeUpDataStructs, PolkadotCorePrimitivesInboundDownwardMessage, PolkadotCorePrimitivesInboundHrmpMessage, PolkadotCorePrimitivesOutboundHrmpMessage, PolkadotParachainPrimitivesXcmpMessageFormat, PolkadotPrimitivesV2AbridgedHostConfiguration, PolkadotPrimitivesV2AbridgedHrmpChannel, PolkadotPrimitivesV2PersistedValidationData, PolkadotPrimitivesV2UpgradeRestriction, SpCoreEcdsaSignature, SpCoreEd25519Signature, SpCoreSr25519Signature, SpRuntimeArithmeticError, SpRuntimeDigest, SpRuntimeDigestDigestItem, SpRuntimeDispatchError, SpRuntimeModuleError, SpRuntimeMultiSignature, SpRuntimeTokenError, SpRuntimeTransactionalError, SpTrieStorageProof, SpVersionRuntimeVersion, UpDataStructsAccessMode, UpDataStructsCollection, UpDataStructsCollectionLimits, UpDataStructsCollectionMode, UpDataStructsCollectionPermissions, UpDataStructsCollectionStats, UpDataStructsCreateCollectionData, UpDataStructsCreateFungibleData, UpDataStructsCreateItemData, UpDataStructsCreateItemExData, UpDataStructsCreateNftData, UpDataStructsCreateNftExData, UpDataStructsCreateReFungibleData, UpDataStructsCreateRefungibleExData, UpDataStructsNestingRule, UpDataStructsProperties, UpDataStructsPropertiesMapBoundedVec, UpDataStructsPropertiesMapPropertyPermission, UpDataStructsProperty, UpDataStructsPropertyKeyPermission, UpDataStructsPropertyPermission, UpDataStructsRmrkAccountIdOrCollectionNftTuple, UpDataStructsRmrkBaseInfo, UpDataStructsRmrkBasicResource, UpDataStructsRmrkCollectionInfo, UpDataStructsRmrkComposableResource, UpDataStructsRmrkEquippableList, UpDataStructsRmrkFixedPart, UpDataStructsRmrkNftChild, UpDataStructsRmrkNftInfo, UpDataStructsRmrkPartType, UpDataStructsRmrkPropertyInfo, UpDataStructsRmrkResourceInfo, UpDataStructsRmrkResourceTypes, UpDataStructsRmrkRoyaltyInfo, UpDataStructsRmrkSlotPart, UpDataStructsRmrkSlotResource, UpDataStructsRmrkTheme, UpDataStructsRmrkThemeProperty, UpDataStructsRpcCollection, UpDataStructsSponsoringRateLimit, UpDataStructsSponsorshipState, UpDataStructsTokenData, XcmDoubleEncoded, XcmV0Junction, XcmV0JunctionBodyId, XcmV0JunctionBodyPart, XcmV0JunctionNetworkId, XcmV0MultiAsset, XcmV0MultiLocation, XcmV0Order, XcmV0OriginKind, XcmV0Response, XcmV0Xcm, XcmV1Junction, XcmV1MultiAsset, XcmV1MultiLocation, XcmV1MultiassetAssetId, XcmV1MultiassetAssetInstance, XcmV1MultiassetFungibility, XcmV1MultiassetMultiAssetFilter, XcmV1MultiassetMultiAssets, XcmV1MultiassetWildFungibility, XcmV1MultiassetWildMultiAsset, XcmV1MultilocationJunctions, XcmV1Order, XcmV1Response, XcmV1Xcm, XcmV2Instruction, XcmV2Response, XcmV2TraitsError, XcmV2TraitsOutcome, XcmV2WeightLimit, XcmV2Xcm, XcmVersionedMultiAssets, XcmVersionedMultiLocation, XcmVersionedXcm } from '@polkadot/types/lookup';
+import type { CumulusPalletDmpQueueCall, CumulusPalletDmpQueueConfigData, CumulusPalletDmpQueueError, CumulusPalletDmpQueueEvent, CumulusPalletDmpQueuePageIndexData, CumulusPalletParachainSystemCall, CumulusPalletParachainSystemError, CumulusPalletParachainSystemEvent, CumulusPalletParachainSystemRelayStateSnapshotMessagingStateSnapshot, CumulusPalletXcmCall, CumulusPalletXcmError, CumulusPalletXcmEvent, CumulusPalletXcmpQueueCall, CumulusPalletXcmpQueueError, CumulusPalletXcmpQueueEvent, CumulusPalletXcmpQueueInboundChannelDetails, CumulusPalletXcmpQueueInboundState, CumulusPalletXcmpQueueOutboundChannelDetails, CumulusPalletXcmpQueueOutboundState, CumulusPalletXcmpQueueQueueConfigData, CumulusPrimitivesParachainInherentParachainInherentData, EthbloomBloom, EthereumBlock, EthereumHeader, EthereumLog, EthereumReceiptEip658ReceiptData, EthereumReceiptReceiptV3, EthereumTransactionAccessListItem, EthereumTransactionEip1559Transaction, EthereumTransactionEip2930Transaction, EthereumTransactionLegacyTransaction, EthereumTransactionTransactionAction, EthereumTransactionTransactionSignature, EthereumTransactionTransactionV2, EthereumTypesHashH64, EvmCoreErrorExitError, EvmCoreErrorExitFatal, EvmCoreErrorExitReason, EvmCoreErrorExitRevert, EvmCoreErrorExitSucceed, FpRpcTransactionStatus, FrameSupportPalletId, FrameSupportTokensMiscBalanceStatus, FrameSupportWeightsDispatchClass, FrameSupportWeightsDispatchInfo, FrameSupportWeightsPays, FrameSupportWeightsPerDispatchClassU32, FrameSupportWeightsPerDispatchClassU64, FrameSupportWeightsPerDispatchClassWeightsPerClass, FrameSupportWeightsRuntimeDbWeight, FrameSupportWeightsWeightToFeeCoefficient, FrameSystemAccountInfo, FrameSystemCall, FrameSystemError, FrameSystemEvent, FrameSystemEventRecord, FrameSystemExtensionsCheckGenesis, FrameSystemExtensionsCheckNonce, FrameSystemExtensionsCheckSpecVersion, FrameSystemExtensionsCheckWeight, FrameSystemLastRuntimeUpgradeInfo, FrameSystemLimitsBlockLength, FrameSystemLimitsBlockWeights, FrameSystemLimitsWeightsPerClass, FrameSystemPhase, OpalRuntimeRuntime, OrmlVestingModuleCall, OrmlVestingModuleError, OrmlVestingModuleEvent, OrmlVestingVestingSchedule, PalletBalancesAccountData, PalletBalancesBalanceLock, PalletBalancesCall, PalletBalancesError, PalletBalancesEvent, PalletBalancesReasons, PalletBalancesReleases, PalletBalancesReserveData, PalletCommonError, PalletCommonEvent, PalletEthereumCall, PalletEthereumError, PalletEthereumEvent, PalletEthereumFakeTransactionFinalizer, PalletEvmAccountBasicCrossAccountIdRepr, PalletEvmCall, PalletEvmCoderSubstrateError, PalletEvmContractHelpersError, PalletEvmContractHelpersSponsoringModeT, PalletEvmError, PalletEvmEvent, PalletEvmMigrationCall, PalletEvmMigrationError, PalletFungibleError, PalletInflationCall, PalletNonfungibleError, PalletNonfungibleItemData, PalletRefungibleError, PalletRefungibleItemData, PalletStructureCall, PalletStructureError, PalletStructureEvent, PalletSudoCall, PalletSudoError, PalletSudoEvent, PalletTemplateTransactionPaymentCall, PalletTemplateTransactionPaymentChargeTransactionPayment, PalletTimestampCall, PalletTransactionPaymentReleases, PalletTreasuryCall, PalletTreasuryError, PalletTreasuryEvent, PalletTreasuryProposal, PalletUniqueCall, PalletUniqueError, PalletUniqueRawEvent, PalletXcmCall, PalletXcmError, PalletXcmEvent, PhantomTypeUpDataStructs, PolkadotCorePrimitivesInboundDownwardMessage, PolkadotCorePrimitivesInboundHrmpMessage, PolkadotCorePrimitivesOutboundHrmpMessage, PolkadotParachainPrimitivesXcmpMessageFormat, PolkadotPrimitivesV2AbridgedHostConfiguration, PolkadotPrimitivesV2AbridgedHrmpChannel, PolkadotPrimitivesV2PersistedValidationData, PolkadotPrimitivesV2UpgradeRestriction, SpCoreEcdsaSignature, SpCoreEd25519Signature, SpCoreSr25519Signature, SpRuntimeArithmeticError, SpRuntimeDigest, SpRuntimeDigestDigestItem, SpRuntimeDispatchError, SpRuntimeModuleError, SpRuntimeMultiSignature, SpRuntimeTokenError, SpRuntimeTransactionalError, SpTrieStorageProof, SpVersionRuntimeVersion, UpDataStructsAccessMode, UpDataStructsCollection, UpDataStructsCollectionLimits, UpDataStructsCollectionMode, UpDataStructsCollectionPermissions, UpDataStructsCollectionStats, UpDataStructsCreateCollectionData, UpDataStructsCreateFungibleData, UpDataStructsCreateItemData, UpDataStructsCreateItemExData, UpDataStructsCreateNftData, UpDataStructsCreateNftExData, UpDataStructsCreateReFungibleData, UpDataStructsCreateRefungibleExData, UpDataStructsNestingRule, UpDataStructsProperties, UpDataStructsPropertiesMapBoundedVec, UpDataStructsPropertiesMapPropertyPermission, UpDataStructsProperty, UpDataStructsPropertyKeyPermission, UpDataStructsPropertyPermission, UpDataStructsRmrkAccountIdOrCollectionNftTuple, UpDataStructsRmrkBaseInfo, UpDataStructsRmrkBasicResource, UpDataStructsRmrkCollectionInfo, UpDataStructsRmrkComposableResource, UpDataStructsRmrkEquippableList, UpDataStructsRmrkFixedPart, UpDataStructsRmrkNftChild, UpDataStructsRmrkNftInfo, UpDataStructsRmrkPartType, UpDataStructsRmrkPropertyInfo, UpDataStructsRmrkResourceInfo, UpDataStructsRmrkResourceTypes, UpDataStructsRmrkRoyaltyInfo, UpDataStructsRmrkSlotPart, UpDataStructsRmrkSlotResource, UpDataStructsRmrkTheme, UpDataStructsRmrkThemeProperty, UpDataStructsRpcCollection, UpDataStructsSponsoringRateLimit, UpDataStructsSponsorshipState, UpDataStructsTokenChild, UpDataStructsTokenData, XcmDoubleEncoded, XcmV0Junction, XcmV0JunctionBodyId, XcmV0JunctionBodyPart, XcmV0JunctionNetworkId, XcmV0MultiAsset, XcmV0MultiLocation, XcmV0Order, XcmV0OriginKind, XcmV0Response, XcmV0Xcm, XcmV1Junction, XcmV1MultiAsset, XcmV1MultiLocation, XcmV1MultiassetAssetId, XcmV1MultiassetAssetInstance, XcmV1MultiassetFungibility, XcmV1MultiassetMultiAssetFilter, XcmV1MultiassetMultiAssets, XcmV1MultiassetWildFungibility, XcmV1MultiassetWildMultiAsset, XcmV1MultilocationJunctions, XcmV1Order, XcmV1Response, XcmV1Xcm, XcmV2Instruction, XcmV2Response, XcmV2TraitsError, XcmV2TraitsOutcome, XcmV2WeightLimit, XcmV2Xcm, XcmVersionedMultiAssets, XcmVersionedMultiLocation, XcmVersionedXcm } from '@polkadot/types/lookup';
 
 declare module '@polkadot/types/types/registry' {
   export interface InterfaceTypes {
@@ -188,6 +188,7 @@
     UpDataStructsRpcCollection: UpDataStructsRpcCollection;
     UpDataStructsSponsoringRateLimit: UpDataStructsSponsoringRateLimit;
     UpDataStructsSponsorshipState: UpDataStructsSponsorshipState;
+    UpDataStructsTokenChild: UpDataStructsTokenChild;
     UpDataStructsTokenData: UpDataStructsTokenData;
     XcmDoubleEncoded: XcmDoubleEncoded;
     XcmV0Junction: XcmV0Junction;
modifiedtests/src/interfaces/types-lookup.tsdiffbeforeafterboth
--- a/tests/src/interfaces/types-lookup.ts
+++ b/tests/src/interfaces/types-lookup.ts
@@ -1604,16 +1604,15 @@
 
   /** @name UpDataStructsCreateNftData (186) */
   export interface UpDataStructsCreateNftData extends Struct {
-    readonly constData: Bytes;
     readonly properties: Vec<UpDataStructsProperty>;
   }
 
-  /** @name UpDataStructsCreateFungibleData (188) */
+  /** @name UpDataStructsCreateFungibleData (187) */
   export interface UpDataStructsCreateFungibleData extends Struct {
     readonly value: u128;
   }
 
-  /** @name UpDataStructsCreateReFungibleData (189) */
+  /** @name UpDataStructsCreateReFungibleData (188) */
   export interface UpDataStructsCreateReFungibleData extends Struct {
     readonly constData: Bytes;
     readonly pieces: u128;
@@ -2469,16 +2468,22 @@
     readonly alive: u32;
   }
 
-  /** @name PhantomTypeUpDataStructs (323) */
-  export interface PhantomTypeUpDataStructs extends Vec<ITuple<[UpDataStructsTokenData, UpDataStructsRpcCollection, PalletEvmAccountBasicCrossAccountIdRepr, UpDataStructsRmrkCollectionInfo, UpDataStructsRmrkNftInfo, UpDataStructsRmrkResourceInfo, UpDataStructsRmrkPropertyInfo, UpDataStructsRmrkBaseInfo, UpDataStructsRmrkPartType, UpDataStructsRmrkTheme, UpDataStructsRmrkNftChild]>> {}
+  /** @name UpDataStructsTokenChild (323) */
+  export interface UpDataStructsTokenChild extends Struct {
+    readonly token: u32;
+    readonly collection: u32;
+  }
+
+  /** @name PhantomTypeUpDataStructs (324) */
+  export interface PhantomTypeUpDataStructs extends Vec<ITuple<[UpDataStructsTokenData, UpDataStructsRpcCollection, UpDataStructsRmrkCollectionInfo, UpDataStructsRmrkNftInfo, UpDataStructsRmrkResourceInfo, UpDataStructsRmrkPropertyInfo, UpDataStructsRmrkBaseInfo, UpDataStructsRmrkPartType, UpDataStructsRmrkTheme, UpDataStructsRmrkNftChild]>> {}
 
-  /** @name UpDataStructsTokenData (325) */
+  /** @name UpDataStructsTokenData (326) */
   export interface UpDataStructsTokenData extends Struct {
     readonly properties: Vec<UpDataStructsProperty>;
     readonly owner: Option<PalletEvmAccountBasicCrossAccountIdRepr>;
   }
 
-  /** @name UpDataStructsRpcCollection (327) */
+  /** @name UpDataStructsRpcCollection (328) */
   export interface UpDataStructsRpcCollection extends Struct {
     readonly owner: AccountId32;
     readonly mode: UpDataStructsCollectionMode;
@@ -2492,7 +2497,7 @@
     readonly properties: Vec<UpDataStructsProperty>;
   }
 
-  /** @name UpDataStructsRmrkCollectionInfo (328) */
+  /** @name UpDataStructsRmrkCollectionInfo (329) */
   export interface UpDataStructsRmrkCollectionInfo extends Struct {
     readonly issuer: AccountId32;
     readonly metadata: Bytes;
@@ -2501,7 +2506,7 @@
     readonly nftsCount: u32;
   }
 
-  /** @name UpDataStructsRmrkNftInfo (331) */
+  /** @name UpDataStructsRmrkNftInfo (332) */
   export interface UpDataStructsRmrkNftInfo extends Struct {
     readonly owner: UpDataStructsRmrkAccountIdOrCollectionNftTuple;
     readonly royalty: Option<UpDataStructsRmrkRoyaltyInfo>;
@@ -2510,7 +2515,7 @@
     readonly pending: bool;
   }
 
-  /** @name UpDataStructsRmrkAccountIdOrCollectionNftTuple (332) */
+  /** @name UpDataStructsRmrkAccountIdOrCollectionNftTuple (333) */
   export interface UpDataStructsRmrkAccountIdOrCollectionNftTuple extends Enum {
     readonly isAccountId: boolean;
     readonly asAccountId: AccountId32;
@@ -2519,13 +2524,13 @@
     readonly type: 'AccountId' | 'CollectionAndNftTuple';
   }
 
-  /** @name UpDataStructsRmrkRoyaltyInfo (334) */
+  /** @name UpDataStructsRmrkRoyaltyInfo (335) */
   export interface UpDataStructsRmrkRoyaltyInfo extends Struct {
     readonly recipient: AccountId32;
     readonly amount: Permill;
   }
 
-  /** @name UpDataStructsRmrkResourceInfo (335) */
+  /** @name UpDataStructsRmrkResourceInfo (336) */
   export interface UpDataStructsRmrkResourceInfo extends Struct {
     readonly id: Bytes;
     readonly resource: UpDataStructsRmrkResourceTypes;
@@ -2533,7 +2538,7 @@
     readonly pendingRemoval: bool;
   }
 
-  /** @name UpDataStructsRmrkResourceTypes (338) */
+  /** @name UpDataStructsRmrkResourceTypes (339) */
   export interface UpDataStructsRmrkResourceTypes extends Enum {
     readonly isBasic: boolean;
     readonly asBasic: UpDataStructsRmrkBasicResource;
@@ -2544,7 +2549,7 @@
     readonly type: 'Basic' | 'Composable' | 'Slot';
   }
 
-  /** @name UpDataStructsRmrkBasicResource (339) */
+  /** @name UpDataStructsRmrkBasicResource (340) */
   export interface UpDataStructsRmrkBasicResource extends Struct {
     readonly src: Option<Bytes>;
     readonly metadata: Option<Bytes>;
@@ -2552,7 +2557,7 @@
     readonly thumb: Option<Bytes>;
   }
 
-  /** @name UpDataStructsRmrkComposableResource (341) */
+  /** @name UpDataStructsRmrkComposableResource (342) */
   export interface UpDataStructsRmrkComposableResource extends Struct {
     readonly parts: Vec<u32>;
     readonly base: u32;
@@ -2562,7 +2567,7 @@
     readonly thumb: Option<Bytes>;
   }
 
-  /** @name UpDataStructsRmrkSlotResource (342) */
+  /** @name UpDataStructsRmrkSlotResource (343) */
   export interface UpDataStructsRmrkSlotResource extends Struct {
     readonly base: u32;
     readonly src: Option<Bytes>;
@@ -2572,20 +2577,20 @@
     readonly thumb: Option<Bytes>;
   }
 
-  /** @name UpDataStructsRmrkPropertyInfo (343) */
+  /** @name UpDataStructsRmrkPropertyInfo (344) */
   export interface UpDataStructsRmrkPropertyInfo extends Struct {
     readonly key: Bytes;
     readonly value: Bytes;
   }
 
-  /** @name UpDataStructsRmrkBaseInfo (346) */
+  /** @name UpDataStructsRmrkBaseInfo (347) */
   export interface UpDataStructsRmrkBaseInfo extends Struct {
     readonly issuer: AccountId32;
     readonly baseType: Bytes;
     readonly symbol: Bytes;
   }
 
-  /** @name UpDataStructsRmrkPartType (347) */
+  /** @name UpDataStructsRmrkPartType (348) */
   export interface UpDataStructsRmrkPartType extends Enum {
     readonly isFixedPart: boolean;
     readonly asFixedPart: UpDataStructsRmrkFixedPart;
@@ -2594,14 +2599,14 @@
     readonly type: 'FixedPart' | 'SlotPart';
   }
 
-  /** @name UpDataStructsRmrkFixedPart (349) */
+  /** @name UpDataStructsRmrkFixedPart (350) */
   export interface UpDataStructsRmrkFixedPart extends Struct {
     readonly id: u32;
     readonly z: u32;
     readonly src: Bytes;
   }
 
-  /** @name UpDataStructsRmrkSlotPart (350) */
+  /** @name UpDataStructsRmrkSlotPart (351) */
   export interface UpDataStructsRmrkSlotPart extends Struct {
     readonly id: u32;
     readonly equippable: UpDataStructsRmrkEquippableList;
@@ -2609,7 +2614,7 @@
     readonly z: u32;
   }
 
-  /** @name UpDataStructsRmrkEquippableList (351) */
+  /** @name UpDataStructsRmrkEquippableList (352) */
   export interface UpDataStructsRmrkEquippableList extends Enum {
     readonly isAll: boolean;
     readonly isEmpty: boolean;
@@ -2618,26 +2623,26 @@
     readonly type: 'All' | 'Empty' | 'Custom';
   }
 
-  /** @name UpDataStructsRmrkTheme (352) */
+  /** @name UpDataStructsRmrkTheme (353) */
   export interface UpDataStructsRmrkTheme extends Struct {
     readonly name: Bytes;
     readonly properties: Vec<UpDataStructsRmrkThemeProperty>;
     readonly inherit: bool;
   }
 
-  /** @name UpDataStructsRmrkThemeProperty (354) */
+  /** @name UpDataStructsRmrkThemeProperty (355) */
   export interface UpDataStructsRmrkThemeProperty extends Struct {
     readonly key: Bytes;
     readonly value: Bytes;
   }
 
-  /** @name UpDataStructsRmrkNftChild (355) */
+  /** @name UpDataStructsRmrkNftChild (356) */
   export interface UpDataStructsRmrkNftChild extends Struct {
     readonly collectionId: u32;
     readonly nftId: u32;
   }
 
-  /** @name PalletCommonError (357) */
+  /** @name PalletCommonError (358) */
   export interface PalletCommonError extends Enum {
     readonly isCollectionNotFound: boolean;
     readonly isMustBeTokenOwner: boolean;
@@ -2675,7 +2680,7 @@
     readonly type: 'CollectionNotFound' | 'MustBeTokenOwner' | 'NoPermission' | 'CantDestroyNotEmptyCollection' | 'PublicMintingNotAllowed' | 'AddressNotInAllowlist' | 'CollectionNameLimitExceeded' | 'CollectionDescriptionLimitExceeded' | 'CollectionTokenPrefixLimitExceeded' | 'TotalCollectionsLimitExceeded' | 'CollectionAdminCountExceeded' | 'CollectionLimitBoundsExceeded' | 'OwnerPermissionsCantBeReverted' | 'TransferNotAllowed' | 'AccountTokenLimitExceeded' | 'CollectionTokenLimitExceeded' | 'MetadataFlagFrozen' | 'TokenNotFound' | 'TokenValueTooLow' | 'ApprovedValueTooLow' | 'CantApproveMoreThanOwned' | 'AddressIsZero' | 'UnsupportedOperation' | 'NotSufficientFounds' | 'NestingIsDisabled' | 'OnlyOwnerAllowedToNest' | 'SourceCollectionIsNotAllowedToNest' | 'CollectionFieldSizeExceeded' | 'NoSpaceForProperty' | 'PropertyLimitReached' | 'PropertyKeyIsTooLong' | 'InvalidCharacterInPropertyKey' | 'EmptyPropertyKey';
   }
 
-  /** @name PalletFungibleError (359) */
+  /** @name PalletFungibleError (360) */
   export interface PalletFungibleError extends Enum {
     readonly isNotFungibleDataUsedToMintFungibleCollectionToken: boolean;
     readonly isFungibleItemsHaveNoId: boolean;
@@ -2685,12 +2690,12 @@
     readonly type: 'NotFungibleDataUsedToMintFungibleCollectionToken' | 'FungibleItemsHaveNoId' | 'FungibleItemsDontHaveData' | 'FungibleDisallowsNesting' | 'SettingPropertiesNotAllowed';
   }
 
-  /** @name PalletRefungibleItemData (360) */
+  /** @name PalletRefungibleItemData (361) */
   export interface PalletRefungibleItemData extends Struct {
     readonly constData: Bytes;
   }
 
-  /** @name PalletRefungibleError (364) */
+  /** @name PalletRefungibleError (365) */
   export interface PalletRefungibleError extends Enum {
     readonly isNotRefungibleDataUsedToMintFungibleCollectionToken: boolean;
     readonly isWrongRefungiblePieces: boolean;
@@ -2699,12 +2704,12 @@
     readonly type: 'NotRefungibleDataUsedToMintFungibleCollectionToken' | 'WrongRefungiblePieces' | 'RefungibleDisallowsNesting' | 'SettingPropertiesNotAllowed';
   }
 
-  /** @name PalletNonfungibleItemData (365) */
+  /** @name PalletNonfungibleItemData (366) */
   export interface PalletNonfungibleItemData extends Struct {
     readonly owner: PalletEvmAccountBasicCrossAccountIdRepr;
   }
 
-  /** @name PalletNonfungibleError (367) */
+  /** @name PalletNonfungibleError (368) */
   export interface PalletNonfungibleError extends Enum {
     readonly isNotNonfungibleDataUsedToMintFungibleCollectionToken: boolean;
     readonly isNonfungibleItemsHaveNoAmount: boolean;
@@ -2712,7 +2717,7 @@
     readonly type: 'NotNonfungibleDataUsedToMintFungibleCollectionToken' | 'NonfungibleItemsHaveNoAmount' | 'CantBurnNftWithChildren';
   }
 
-  /** @name PalletStructureError (368) */
+  /** @name PalletStructureError (369) */
   export interface PalletStructureError extends Enum {
     readonly isOuroborosDetected: boolean;
     readonly isDepthLimit: boolean;
@@ -2720,7 +2725,7 @@
     readonly type: 'OuroborosDetected' | 'DepthLimit' | 'TokenNotFound';
   }
 
-  /** @name PalletEvmError (371) */
+  /** @name PalletEvmError (372) */
   export interface PalletEvmError extends Enum {
     readonly isBalanceLow: boolean;
     readonly isFeeOverflow: boolean;
@@ -2731,7 +2736,7 @@
     readonly type: 'BalanceLow' | 'FeeOverflow' | 'PaymentOverflow' | 'WithdrawFailed' | 'GasPriceTooLow' | 'InvalidNonce';
   }
 
-  /** @name FpRpcTransactionStatus (374) */
+  /** @name FpRpcTransactionStatus (375) */
   export interface FpRpcTransactionStatus extends Struct {
     readonly transactionHash: H256;
     readonly transactionIndex: u32;
@@ -2742,10 +2747,10 @@
     readonly logsBloom: EthbloomBloom;
   }
 
-  /** @name EthbloomBloom (376) */
+  /** @name EthbloomBloom (377) */
   export interface EthbloomBloom extends U8aFixed {}
 
-  /** @name EthereumReceiptReceiptV3 (378) */
+  /** @name EthereumReceiptReceiptV3 (379) */
   export interface EthereumReceiptReceiptV3 extends Enum {
     readonly isLegacy: boolean;
     readonly asLegacy: EthereumReceiptEip658ReceiptData;
@@ -2756,7 +2761,7 @@
     readonly type: 'Legacy' | 'Eip2930' | 'Eip1559';
   }
 
-  /** @name EthereumReceiptEip658ReceiptData (379) */
+  /** @name EthereumReceiptEip658ReceiptData (380) */
   export interface EthereumReceiptEip658ReceiptData extends Struct {
     readonly statusCode: u8;
     readonly usedGas: U256;
@@ -2764,14 +2769,14 @@
     readonly logs: Vec<EthereumLog>;
   }
 
-  /** @name EthereumBlock (380) */
+  /** @name EthereumBlock (381) */
   export interface EthereumBlock extends Struct {
     readonly header: EthereumHeader;
     readonly transactions: Vec<EthereumTransactionTransactionV2>;
     readonly ommers: Vec<EthereumHeader>;
   }
 
-  /** @name EthereumHeader (381) */
+  /** @name EthereumHeader (382) */
   export interface EthereumHeader extends Struct {
     readonly parentHash: H256;
     readonly ommersHash: H256;
@@ -2790,24 +2795,24 @@
     readonly nonce: EthereumTypesHashH64;
   }
 
-  /** @name EthereumTypesHashH64 (382) */
+  /** @name EthereumTypesHashH64 (383) */
   export interface EthereumTypesHashH64 extends U8aFixed {}
 
-  /** @name PalletEthereumError (387) */
+  /** @name PalletEthereumError (388) */
   export interface PalletEthereumError extends Enum {
     readonly isInvalidSignature: boolean;
     readonly isPreLogExists: boolean;
     readonly type: 'InvalidSignature' | 'PreLogExists';
   }
 
-  /** @name PalletEvmCoderSubstrateError (388) */
+  /** @name PalletEvmCoderSubstrateError (389) */
   export interface PalletEvmCoderSubstrateError extends Enum {
     readonly isOutOfGas: boolean;
     readonly isOutOfFund: boolean;
     readonly type: 'OutOfGas' | 'OutOfFund';
   }
 
-  /** @name PalletEvmContractHelpersSponsoringModeT (389) */
+  /** @name PalletEvmContractHelpersSponsoringModeT (390) */
   export interface PalletEvmContractHelpersSponsoringModeT extends Enum {
     readonly isDisabled: boolean;
     readonly isAllowlisted: boolean;
@@ -2815,20 +2820,20 @@
     readonly type: 'Disabled' | 'Allowlisted' | 'Generous';
   }
 
-  /** @name PalletEvmContractHelpersError (391) */
+  /** @name PalletEvmContractHelpersError (392) */
   export interface PalletEvmContractHelpersError extends Enum {
     readonly isNoPermission: boolean;
     readonly type: 'NoPermission';
   }
 
-  /** @name PalletEvmMigrationError (392) */
+  /** @name PalletEvmMigrationError (393) */
   export interface PalletEvmMigrationError extends Enum {
     readonly isAccountNotEmpty: boolean;
     readonly isAccountIsNotMigrating: boolean;
     readonly type: 'AccountNotEmpty' | 'AccountIsNotMigrating';
   }
 
-  /** @name SpRuntimeMultiSignature (394) */
+  /** @name SpRuntimeMultiSignature (395) */
   export interface SpRuntimeMultiSignature extends Enum {
     readonly isEd25519: boolean;
     readonly asEd25519: SpCoreEd25519Signature;
@@ -2839,34 +2844,34 @@
     readonly type: 'Ed25519' | 'Sr25519' | 'Ecdsa';
   }
 
-  /** @name SpCoreEd25519Signature (395) */
+  /** @name SpCoreEd25519Signature (396) */
   export interface SpCoreEd25519Signature extends U8aFixed {}
 
-  /** @name SpCoreSr25519Signature (397) */
+  /** @name SpCoreSr25519Signature (398) */
   export interface SpCoreSr25519Signature extends U8aFixed {}
 
-  /** @name SpCoreEcdsaSignature (398) */
+  /** @name SpCoreEcdsaSignature (399) */
   export interface SpCoreEcdsaSignature extends U8aFixed {}
 
-  /** @name FrameSystemExtensionsCheckSpecVersion (401) */
+  /** @name FrameSystemExtensionsCheckSpecVersion (402) */
   export type FrameSystemExtensionsCheckSpecVersion = Null;
 
-  /** @name FrameSystemExtensionsCheckGenesis (402) */
+  /** @name FrameSystemExtensionsCheckGenesis (403) */
   export type FrameSystemExtensionsCheckGenesis = Null;
 
-  /** @name FrameSystemExtensionsCheckNonce (405) */
+  /** @name FrameSystemExtensionsCheckNonce (406) */
   export interface FrameSystemExtensionsCheckNonce extends Compact<u32> {}
 
-  /** @name FrameSystemExtensionsCheckWeight (406) */
+  /** @name FrameSystemExtensionsCheckWeight (407) */
   export type FrameSystemExtensionsCheckWeight = Null;
 
-  /** @name PalletTemplateTransactionPaymentChargeTransactionPayment (407) */
+  /** @name PalletTemplateTransactionPaymentChargeTransactionPayment (408) */
   export interface PalletTemplateTransactionPaymentChargeTransactionPayment extends Compact<u128> {}
 
-  /** @name OpalRuntimeRuntime (408) */
+  /** @name OpalRuntimeRuntime (409) */
   export type OpalRuntimeRuntime = Null;
 
-  /** @name PalletEthereumFakeTransactionFinalizer (409) */
+  /** @name PalletEthereumFakeTransactionFinalizer (410) */
   export type PalletEthereumFakeTransactionFinalizer = Null;
 
 } // declare module
modifiedtests/src/interfaces/unique/definitions.tsdiffbeforeafterboth
--- a/tests/src/interfaces/unique/definitions.ts
+++ b/tests/src/interfaces/unique/definitions.ts
@@ -50,6 +50,7 @@
     allowance: fun('Get allowed amount', [collectionParam, crossAccountParam('sender'), crossAccountParam('spender'), tokenParam], 'u128'),
     tokenOwner: fun('Get token owner', [collectionParam, tokenParam], `Option<${CROSS_ACCOUNT_ID_TYPE}>`),
     topmostTokenOwner: fun('Get token owner, in case of nested token - find parent recursive', [collectionParam, tokenParam], `Option<${CROSS_ACCOUNT_ID_TYPE}>`),
+    tokenChildren: fun('Get tokens nested directly into the token', [collectionParam, tokenParam], 'Vec<UpDataStructsTokenChild>'),
     constMetadata: fun('Get token constant metadata', [collectionParam, tokenParam], 'Vec<u8>'),
     variableMetadata: fun('Get token variable metadata', [collectionParam, tokenParam], 'Vec<u8>'),
     collectionProperties: fun(
modifiedtests/src/nesting/nest.test.tsdiffbeforeafterboth
--- a/tests/src/nesting/nest.test.ts
+++ b/tests/src/nesting/nest.test.ts
@@ -7,6 +7,7 @@
   createItemExpectSuccess,
   enableAllowListExpectSuccess,
   enablePublicMintingExpectSuccess,
+  getTokenChildren,
   getTokenOwner,
   getTopmostTokenOwner,
   normalizeAccountId,
@@ -76,8 +77,8 @@
         api,
         alice,
         api.tx.unique.transferFrom(
-          normalizeAccountId({Ethereum: tokenIdToAddress(collection, tokenA)}), 
-          normalizeAccountId({Ethereum: tokenIdToAddress(collection, tokenB)}), 
+          normalizeAccountId({Ethereum: tokenIdToAddress(collection, tokenA)}),
+          normalizeAccountId({Ethereum: tokenIdToAddress(collection, tokenB)}),
           collection,
           tokenC,
           1,
@@ -88,6 +89,63 @@
     });
   });
 
+  it('Checks token children', async () => {
+    await usingApi(async api => {
+      const collectionA = await createCollectionExpectSuccess({mode: {type: 'NFT'}});
+      await setCollectionPermissionsExpectSuccess(alice, collectionA, {nesting: 'Owner'});
+      const collectionB = await createCollectionExpectSuccess({mode: {type: 'Fungible', decimalPoints: 0}});
+
+      const targetToken = await createItemExpectSuccess(alice, collectionA, 'NFT');
+      const targetAddress = {Ethereum: tokenIdToAddress(collectionA, targetToken)};
+      let children = await getTokenChildren(api, collectionA, targetToken);
+      expect(children.length).to.be.equal(0, 'Children length check at creation');
+
+      // Create a nested NFT token
+      const tokenA = await createItemExpectSuccess(alice, collectionA, 'NFT', targetAddress);
+      children = await getTokenChildren(api, collectionA, targetToken);
+      expect(children.length).to.be.equal(1, 'Children length check at nesting #1');
+      expect(children).to.have.deep.members([
+        {token: tokenA, collection: collectionA},
+      ], 'Children contents check at nesting #1');
+
+      // Create then nest
+      const tokenB = await createItemExpectSuccess(alice, collectionA, 'NFT');
+      await transferExpectSuccess(collectionA, tokenB, alice, targetAddress);
+      children = await getTokenChildren(api, collectionA, targetToken);
+      expect(children.length).to.be.equal(2, 'Children length check at nesting #2');
+      expect(children).to.have.deep.members([
+        {token: tokenA, collection: collectionA},
+        {token: tokenB, collection: collectionA},
+      ], 'Children contents check at nesting #2');
+
+      // Move token B to a different user outside the nesting tree
+      await transferExpectSuccess(collectionA, tokenB, alice, bob);
+      children = await getTokenChildren(api, collectionA, targetToken);
+      expect(children.length).to.be.equal(1, 'Children length check at unnesting');
+      expect(children).to.be.have.deep.members([
+        {token: tokenA, collection: collectionA},
+      ], 'Children contents check at unnesting');
+
+      // Create a fungible token in another collection and then nest
+      const tokenC = await createItemExpectSuccess(alice, collectionB, 'Fungible');
+      await transferExpectSuccess(collectionB, tokenC, alice, targetAddress, 1, 'Fungible');
+      children = await getTokenChildren(api, collectionA, targetToken);
+      expect(children.length).to.be.equal(2, 'Children length check at nesting #3 (from another collection)');
+      expect(children).to.be.have.deep.members([
+        {token: tokenA, collection: collectionA},
+        {token: tokenC, collection: collectionB},
+      ], 'Children contents check at nesting #3 (from another collection)');
+
+      // Move the fungible token inside token A deeper in the nesting tree
+      await transferFromExpectSuccess(collectionB, tokenC, alice, targetAddress, {Ethereum: tokenIdToAddress(collectionA, tokenA)}, 1, 'Fungible');
+      children = await getTokenChildren(api, collectionA, targetToken);
+      expect(children.length).to.be.equal(1, 'Children length check at deeper nesting');
+      expect(children).to.be.have.deep.members([
+        {token: tokenA, collection: collectionA},
+      ], 'Children contents check at deeper nesting');
+    });
+  });
+
   // ---------- Non-Fungible ----------
 
   it('NFT: allows an Owner to nest/unnest their token', async () => {
modifiedtests/src/util/helpers.tsdiffbeforeafterboth
--- a/tests/src/util/helpers.ts
+++ b/tests/src/util/helpers.ts
@@ -27,6 +27,7 @@
 import {default as usingApi, executeTransaction, submitTransactionAsync, submitTransactionExpectFailAsync} from '../substrate/substrate-api';
 import {hexToStr, strToUTF16, utf16ToStr} from './util';
 import {UpDataStructsRpcCollection, UpDataStructsCreateItemData, UpDataStructsProperty} from '@polkadot/types/lookup';
+import {UpDataStructsTokenChild} from '../interfaces';
 
 chai.use(chaiAsPromised);
 const expect = chai.expect;
@@ -1165,6 +1166,13 @@
   if (owner == null) throw new Error('owner == null');
   return normalizeAccountId(owner);
 }
+export async function getTokenChildren(
+  api: ApiPromise,
+  collectionId: number,
+  tokenId: number,
+): Promise<UpDataStructsTokenChild[]> {
+  return (await api.rpc.unique.tokenChildren(collectionId, tokenId)).toJSON() as any;
+}
 export async function isTokenExists(
   api: ApiPromise,
   collectionId: number,