--- a/client/rpc/src/lib.rs
+++ b/client/rpc/src/lib.rs
@@ -73,13 +73,6 @@
 		token: TokenId,
 		at: Option<BlockHash>,
 	) -> Result<Option<CrossAccountId>>;
-	#[rpc(name = "unique_constMetadata")]
-	fn const_metadata(
-		&self,
-		collection: CollectionId,
-		token: TokenId,
-		at: Option<BlockHash>,
-	) -> Result<Vec<u8>>;
 
 	#[rpc(name = "unique_collectionProperties")]
 	fn collection_properties(
@@ -418,9 +411,6 @@
 	);
 	pass_method!(
 		topmost_token_owner(collection: CollectionId, token: TokenId) -> Option<CrossAccountId>, unique_api
-	);
-	pass_method!(
-		const_metadata(collection: CollectionId, token: TokenId) -> Vec<u8>, unique_api
 	);
 	pass_method!(total_supply(collection: CollectionId) -> u32, unique_api);
 	pass_method!(account_balance(collection: CollectionId, account: CrossAccountId) -> u32, unique_api);
--- a/pallets/common/src/benchmarking.rs
+++ b/pallets/common/src/benchmarking.rs
@@ -86,8 +86,6 @@
 	let name = create_u16_data::<MAX_COLLECTION_NAME_LENGTH>();
 	let description = create_u16_data::<MAX_COLLECTION_DESCRIPTION_LENGTH>();
 	let token_prefix = create_data::<MAX_TOKEN_PREFIX_LENGTH>();
-	let offchain_schema = create_data::<OFFCHAIN_SCHEMA_LIMIT>();
-	let const_on_chain_schema = create_data::<CONST_ON_CHAIN_SCHEMA_LIMIT>();
 	handler(
 		owner,
 		CreateCollectionData {
@@ -95,8 +93,6 @@
 			name,
 			description,
 			token_prefix,
-			offchain_schema,
-			const_on_chain_schema,
 			..Default::default()
 		},
 	)
--- a/pallets/common/src/lib.rs
+++ b/pallets/common/src/lib.rs
@@ -55,7 +55,6 @@
 	SponsoringRateLimit,
 	budget::Budget,
 	COLLECTION_FIELD_LIMIT,
-	CollectionField,
 	PhantomType,
 	Property,
 	Properties,
@@ -77,6 +76,8 @@
 	RmrkPartType,
 	RmrkTheme,
 	RmrkNftChild,
+	CollectionPermissions,
+	SchemaVersion,
 };
 
 pub use pallet::*;
@@ -433,17 +434,6 @@
 		Hasher = Blake2_128Concat,
 		Key = CollectionId,
 		Value = PropertiesPermissionMap,
-		QueryKind = ValueQuery,
-	>;
-
-	/// Large variable-size collection fields are extracted here
-	#[pallet::storage]
-	pub type CollectionData<T> = StorageNMap<
-		Key = (
-			Key<Twox64Concat, CollectionId>,
-			Key<Twox64Concat, CollectionField>,
-		),
-		Value = BoundedVec<u8, ConstU32<COLLECTION_FIELD_LIMIT>>,
 		QueryKind = ValueQuery,
 	>;
 
@@ -505,19 +495,37 @@
 			if StorageVersion::get::<Pallet<T>>() < StorageVersion::new(1) {
 				use up_data_structs::{CollectionVersion1, CollectionVersion2};
 				<CollectionById<T>>::translate::<CollectionVersion1<T::AccountId>, _>(|id, v| {
-					Self::set_field_raw(
-						id,
-						CollectionField::OffchainSchema,
-						v.offchain_schema.clone().into_inner(),
-					)
-					.expect("data has lower bounds than field");
-					Self::set_field_raw(
+					let mut props = Vec::new();
+					if !v.offchain_schema.is_empty() {
+						props.push(Property {
+							key: b"_old_offchainSchema".to_vec().try_into().unwrap(),
+							value: v.offchain_schema.clone().into_inner().try_into().expect("offchain schema too big"),
+						});
+					}
+					if !v.variable_on_chain_schema.is_empty() {
+						props.push(Property {
+							key: b"_old_variableOnChainSchema".to_vec().try_into().unwrap(),
+							value: v.variable_on_chain_schema.clone().into_inner().try_into().expect("offchain schema too big"),
+						});
+					}
+					if !v.const_on_chain_schema.is_empty() {
+						props.push(Property {
+							key: b"_old_constOnChainSchema".to_vec().try_into().unwrap(),
+							value: v.const_on_chain_schema.clone().into_inner().try_into().expect("offchain schema too big"),
+						});
+					}
+					props.push(Property {
+						key: b"_old_schemaVersion".to_vec().try_into().unwrap(),
+						value: match v.schema_version {
+							SchemaVersion::ImageURL => b"ImageUrl".as_slice(),
+							SchemaVersion::Unique => b"Unique".as_slice(),
+						}.to_vec().try_into().unwrap(),
+					});
+					Self::set_scoped_collection_properties(
 						id,
-						CollectionField::ConstOnChainSchema,
-						v.const_on_chain_schema.clone().into_inner(),
-					)
-					.expect("data has lower bounds than field");
-
+						PropertyScope::None,
+						props.into_iter(),
+					).expect("existing data larger than properties");
 					Some(CollectionVersion2::from(v))
 				});
 			}
@@ -587,7 +595,6 @@
 			owner_can_transfer: Some(limits.owner_can_transfer()),
 			owner_can_destroy: Some(limits.owner_can_destroy()),
 			transfers_enabled: Some(limits.transfers_enabled()),
-			nesting_rule: Some(limits.nesting_rule().clone()),
 		};
 
 		Some(effective_limits)
@@ -599,12 +606,10 @@
 			description,
 			owner,
 			mode,
-			access,
 			token_prefix,
-			mint_mode,
-			schema_version,
 			sponsorship,
 			limits,
+			permissions,
 		} = <CollectionById<T>>::get(collection)?;
 
 		let token_property_permissions = <CollectionPropertyPermissions<T>>::get(collection)
@@ -628,28 +633,45 @@
 			description: description.into_inner(),
 			owner,
 			mode,
-			access,
 			token_prefix: token_prefix.into_inner(),
-			mint_mode,
-			schema_version,
 			sponsorship,
 			limits,
-			offchain_schema: <CollectionData<T>>::get((
-				collection,
-				CollectionField::OffchainSchema,
-			))
-			.into_inner(),
-			const_on_chain_schema: <CollectionData<T>>::get((
-				collection,
-				CollectionField::ConstOnChainSchema,
-			))
-			.into_inner(),
+			permissions,
 			token_property_permissions,
 			properties,
 		})
 	}
 }
 
+macro_rules! limit_default {
+	($old:ident, $new:ident, $($field:ident $(($arg:expr))? => $check:expr),* $(,)?) => {{
+		$(
+			if let Some($new) = $new.$field {
+				let $old = $old.$field($($arg)?);
+				let _ = $new;
+				let _ = $old;
+				$check
+			} else {
+				$new.$field = $old.$field
+			}
+		)*
+	}};
+}
+macro_rules! limit_default_clone {
+	($old:ident, $new:ident, $($field:ident $(($arg:expr))? => $check:expr),* $(,)?) => {{
+		$(
+			if let Some($new) = $new.$field.clone() {
+				let $old = $old.$field($($arg)?);
+				let _ = $new;
+				let _ = $old;
+				$check
+			} else {
+				$new.$field = $old.$field.clone()
+			}
+		)*
+	}};
+}
+
 impl<T: Config> Pallet<T> {
 	pub fn init_collection(
 		owner: T::AccountId,
@@ -681,11 +703,8 @@
 			owner: owner.clone(),
 			name: data.name,
 			mode: data.mode.clone(),
-			mint_mode: false,
-			access: data.access.unwrap_or_default(),
 			description: data.description,
 			token_prefix: data.token_prefix,
-			schema_version: data.schema_version.unwrap_or_default(),
 			sponsorship: data
 				.pending_sponsor
 				.map(SponsorshipState::Unconfirmed)
@@ -694,6 +713,10 @@
 				.limits
 				.map(|limits| Self::clamp_limits(data.mode.clone(), &Default::default(), limits))
 				.unwrap_or_else(|| Ok(CollectionLimits::default()))?,
+			permissions: data
+				.permissions
+				.map(|permissions| Self::clamp_permissions(data.mode.clone(), &Default::default(), permissions))
+				.unwrap_or_else(|| Ok(CollectionPermissions::default()))?,
 		};
 
 		let mut collection_properties = up_data_structs::CollectionProperties::get();
@@ -732,18 +755,6 @@
 		<CreatedCollectionCount<T>>::put(created_count);
 		<Pallet<T>>::deposit_event(Event::CollectionCreated(id, data.mode.id(), owner.clone()));
 		<CollectionById<T>>::insert(id, collection);
-		Self::set_field_raw(
-			id,
-			CollectionField::OffchainSchema,
-			data.offchain_schema.into_inner(),
-		)
-		.expect("data has lower bounds than field");
-		Self::set_field_raw(
-			id,
-			CollectionField::ConstOnChainSchema,
-			data.const_on_chain_schema.into_inner(),
-		)
-		.expect("data has lower bounds than field");
 		Ok(id)
 	}
 
@@ -766,7 +777,6 @@
 
 		<DestroyedCollectionCount<T>>::put(destroyed_collections);
 		<CollectionById<T>>::remove(collection.id);
-		<CollectionData<T>>::remove_prefix((collection.id,), None);
 		<AdminAmount<T>>::remove(collection.id);
 		<IsAdmin<T>>::remove_prefix((collection.id,), None);
 		<Allowlist<T>>::remove_prefix((collection.id,), None);
@@ -866,6 +876,18 @@
 		Ok(())
 	}
 
+	// For migrations
+	pub fn set_property_permission_unchecked(
+		collection: CollectionId,
+		property_permission: PropertyKeyPermission,
+	) -> DispatchResult {
+		<CollectionPropertyPermissions<T>>::try_mutate(collection, |permissions| {
+			permissions.try_set(property_permission.key, property_permission.permission)
+		})
+		.map_err(<Error<T>>::from)?;
+		Ok(())
+	}
+
 	pub fn set_property_permission(
 		collection: &CollectionHandle<T>,
 		sender: &T::CrossAccountId,
@@ -989,35 +1011,6 @@
 		Ok(key_permissions)
 	}
 
-	fn set_field_raw(
-		collection_id: CollectionId,
-		field: CollectionField,
-		value: Vec<u8>,
-	) -> DispatchResult {
-		if !value.is_empty() {
-			<CollectionData<T>>::insert(
-				(collection_id, field),
-				BoundedVec::try_from(value).map_err(|_| <Error<T>>::CollectionFieldSizeExceeded)?,
-			)
-		} else {
-			<CollectionData<T>>::remove((collection_id, field));
-		}
-		Ok(())
-	}
-
-	pub fn set_field(
-		collection: &CollectionHandle<T>,
-		sender: &T::CrossAccountId,
-		field: CollectionField,
-		value: Vec<u8>,
-	) -> DispatchResult {
-		collection.check_is_owner_or_admin(sender)?;
-
-		// =========
-
-		Self::set_field_raw(collection.id, field, value)
-	}
-
 	pub fn toggle_allowlist(
 		collection: &CollectionHandle<T>,
 		sender: &T::CrossAccountId,
@@ -1077,21 +1070,6 @@
 		old_limit: &CollectionLimits,
 		mut new_limit: CollectionLimits,
 	) -> Result<CollectionLimits, DispatchError> {
-		macro_rules! limit_default {
-				($old:ident, $new:ident, $($field:ident $(($arg:expr))? => $check:expr),* $(,)?) => {{
-					$(
-						if let Some($new) = $new.$field {
-							let $old = $old.$field($($arg)?);
-							let _ = $new;
-							let _ = $old;
-							$check
-						} else {
-							$new.$field = $old.$field
-						}
-					)*
-				}};
-			}
-
 		limit_default!(old_limit, new_limit,
 			account_token_ownership_limit => ensure!(
 				new_limit <= MAX_TOKEN_OWNERSHIP,
@@ -1126,6 +1104,15 @@
 		);
 		Ok(new_limit)
 	}
+	pub fn clamp_permissions(
+		mode: CollectionMode,
+		old_limit: &CollectionPermissions,
+		mut new_limit: CollectionPermissions,
+	) -> Result<CollectionPermissions, DispatchError> {
+		limit_default_clone!(old_limit, new_limit,
+		);
+		Ok(new_limit)
+	}
 }
 
 #[macro_export]
@@ -1253,7 +1240,6 @@
 	fn last_token_id(&self) -> TokenId;
 
 	fn token_owner(&self, token: TokenId) -> Option<T::CrossAccountId>;
-	fn const_metadata(&self, token: TokenId) -> Vec<u8>;
 	fn token_property(&self, token_id: TokenId, key: &PropertyKey) -> Option<PropertyValue>;
 	fn token_properties(&self, token_id: TokenId, keys: Option<Vec<PropertyKey>>) -> Vec<Property>;
 	/// Amount of unique collection tokens
--- a/pallets/fungible/src/common.rs
+++ b/pallets/fungible/src/common.rs
@@ -51,27 +51,27 @@
 		<SelfWeightOf<T>>::burn_item()
 	}
 
-	fn set_collection_properties(amount: u32) -> Weight {
+	fn set_collection_properties(_amount: u32) -> Weight {
 		// Error
 		0
 	}
 
-	fn delete_collection_properties(amount: u32) -> Weight {
+	fn delete_collection_properties(_amount: u32) -> Weight {
 		// Error
 		0
 	}
 
-	fn set_token_properties(amount: u32) -> Weight {
+	fn set_token_properties(_amount: u32) -> Weight {
 		// Error
 		0
 	}
 
-	fn delete_token_properties(amount: u32) -> Weight {
+	fn delete_token_properties(_amount: u32) -> Weight {
 		// Error
 		0
 	}
 
-	fn set_property_permissions(amount: u32) -> Weight {
+	fn set_property_permissions(_amount: u32) -> Weight {
 		// Error
 		0
 	}
@@ -320,9 +320,6 @@
 
 	fn token_owner(&self, _token: TokenId) -> Option<T::CrossAccountId> {
 		None
-	}
-	fn const_metadata(&self, _token: TokenId) -> Vec<u8> {
-		Vec::new()
 	}
 
 	fn token_property(&self, _token_id: TokenId, _key: &PropertyKey) -> Option<PropertyValue> {
--- a/pallets/fungible/src/lib.rs
+++ b/pallets/fungible/src/lib.rs
@@ -168,7 +168,7 @@
 			.checked_sub(amount)
 			.ok_or(<CommonError<T>>::TokenValueTooLow)?;
 
-		if collection.access == AccessMode::AllowList {
+		if collection.permissions.access() == AccessMode::AllowList {
 			collection.check_allowlist(owner)?;
 		}
 
@@ -210,7 +210,7 @@
 			<CommonError<T>>::TransferNotAllowed,
 		);
 
-		if collection.access == AccessMode::AllowList {
+		if collection.permissions.access() == AccessMode::AllowList {
 			collection.check_allowlist(from)?;
 			collection.check_allowlist(to)?;
 		}
@@ -280,7 +280,7 @@
 	) -> DispatchResult {
 		if !collection.is_owner_or_admin(sender) {
 			ensure!(
-				collection.mint_mode,
+				collection.permissions.mint_mode(),
 				<CommonError<T>>::PublicMintingNotAllowed
 			);
 			collection.check_allowlist(sender)?;
@@ -380,7 +380,7 @@
 		spender: &T::CrossAccountId,
 		amount: u128,
 	) -> DispatchResult {
-		if collection.access == AccessMode::AllowList {
+		if collection.permissions.access() == AccessMode::AllowList {
 			collection.check_allowlist(owner)?;
 			collection.check_allowlist(spender)?;
 		}
@@ -408,7 +408,7 @@
 		if spender.conv_eq(from) {
 			return Ok(None);
 		}
-		if collection.access == AccessMode::AllowList {
+		if collection.permissions.access() == AccessMode::AllowList {
 			// `from`, `to` checked in [`transfer`]
 			collection.check_allowlist(spender)?;
 		}
--- a/pallets/nonfungible/src/benchmarking.rs
+++ b/pallets/nonfungible/src/benchmarking.rs
@@ -29,9 +29,7 @@
 const SEED: u32 = 1;
 
 fn create_max_item_data<T: Config>(owner: T::CrossAccountId) -> CreateItemData<T> {
-	let const_data = create_data::<CUSTOM_DATA_LIMIT>();
 	CreateItemData::<T> {
-		const_data,
 		owner,
 		properties: Default::default(),
 	}
--- a/pallets/nonfungible/src/common.rs
+++ b/pallets/nonfungible/src/common.rs
@@ -116,7 +116,6 @@
 ) -> Result<CreateItemData<T>, DispatchError> {
 	match data {
 		up_data_structs::CreateItemData::NFT(data) => Ok(CreateItemData::<T> {
-			const_data: data.const_data,
 			properties: data.properties,
 			owner: to.clone(),
 		}),
@@ -376,12 +375,6 @@
 
 	fn token_owner(&self, token: TokenId) -> Option<T::CrossAccountId> {
 		<TokenData<T>>::get((self.id, token)).map(|t| t.owner)
-	}
-	fn const_metadata(&self, token: TokenId) -> Vec<u8> {
-		<TokenData<T>>::get((self.id, token))
-			.map(|t| t.const_data)
-			.unwrap_or_default()
-			.into_inner()
 	}
 
 	fn token_property(&self, token_id: TokenId, key: &PropertyKey) -> Option<PropertyValue> {
--- a/pallets/nonfungible/src/erc.rs
+++ b/pallets/nonfungible/src/erc.rs
@@ -109,15 +109,6 @@
 	}
 }
 
-fn error_unsupported_schema_version() -> Error {
-	alloc::format!(
-		"Unsupported schema version! Support only {:?}",
-		SchemaVersion::ImageURL
-	)
-	.as_str()
-	.into()
-}
-
 #[derive(ToLog)]
 pub enum ERC721Events {
 	Transfer {
@@ -167,16 +158,10 @@
 	/// Returns token's const_metadata
 	#[solidity(rename_selector = "tokenURI")]
 	fn token_uri(&self, token_id: uint256) -> Result<string> {
-		if !matches!(self.schema_version, SchemaVersion::ImageURL) {
-			return Err(error_unsupported_schema_version());
-		}
-
 		self.consume_store_reads(1)?;
-		let token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;
+		let _token_id: u32 = token_id.try_into().map_err(|_| "token id overflow")?;
 		Ok(string::from_utf8_lossy(
-			&<TokenData<T>>::get((self.id, token_id))
-				.ok_or("token not found")?
-				.const_data,
+			todo!()
 		)
 		.into())
 	}
@@ -344,7 +329,6 @@
 			self,
 			&caller,
 			CreateItemData::<T> {
-				const_data: BoundedVec::default(),
 				properties: BoundedVec::default(),
 				owner: to,
 			},
@@ -366,10 +350,6 @@
 		token_id: uint256,
 		token_uri: string,
 	) -> Result<bool> {
-		if !matches!(self.schema_version, SchemaVersion::ImageURL) {
-			return Err(error_unsupported_schema_version());
-		}
-
 		let caller = T::CrossAccountId::from_eth(caller);
 		let to = T::CrossAccountId::from_eth(to);
 		let token_id: u32 = token_id.try_into().map_err(|_| "amount overflow")?;
@@ -385,13 +365,12 @@
 			return Err("item id should be next".into());
 		}
 
+		todo!("token uri");
+
 		<Pallet<T>>::create_item(
 			self,
 			&caller,
 			CreateItemData::<T> {
-				const_data: Vec::<u8>::from(token_uri)
-					.try_into()
-					.map_err(|_| "token uri is too long")?,
 				properties: BoundedVec::default(),
 				owner: to,
 			},
@@ -477,7 +456,6 @@
 		}
 		let data = (0..total_tokens)
 			.map(|_| CreateItemData::<T> {
-				const_data: BoundedVec::default(),
 				properties: BoundedVec::default(),
 				owner: to.clone(),
 			})
@@ -496,10 +474,6 @@
 		to: address,
 		tokens: Vec<(uint256, string)>,
 	) -> Result<bool> {
-		if !matches!(self.schema_version, SchemaVersion::ImageURL) {
-			return Err(error_unsupported_schema_version());
-		}
-
 		let caller = T::CrossAccountId::from_eth(caller);
 		let to = T::CrossAccountId::from_eth(to);
 		let mut expected_index = <TokensMinted<T>>::get(self.id)
@@ -517,10 +491,8 @@
 			}
 			expected_index = expected_index.checked_add(1).ok_or("item id overflow")?;
 
+			todo!("token uri");
 			data.push(CreateItemData::<T> {
-				const_data: Vec::<u8>::from(token_uri)
-					.try_into()
-					.map_err(|_| "token uri is too long")?,
 				properties: BoundedVec::default(),
 				owner: to.clone(),
 			});
--- a/pallets/nonfungible/src/lib.rs
+++ b/pallets/nonfungible/src/lib.rs
@@ -33,7 +33,7 @@
 use pallet_evm_coder_substrate::{SubstrateRecorder, WithRecorder};
 use sp_core::H160;
 use sp_runtime::{ArithmeticError, DispatchError, DispatchResult, TransactionOutcome};
-use sp_std::{vec::Vec, vec};
+use sp_std::{vec::Vec, vec, collections::btree_set::BTreeSet};
 use core::ops::Deref;
 use sp_std::collections::btree_map::BTreeMap;
 use codec::{Encode, Decode, MaxEncodedLen};
@@ -52,6 +52,7 @@
 #[struct_versioning::versioned(version = 2, upper)]
 #[derive(Encode, Decode, TypeInfo, MaxEncodedLen)]
 pub struct ItemData<CrossAccountId> {
+	#[version(..2)]
 	pub const_data: BoundedVec<u8, CustomDataLimit>,
 
 	#[version(..2)]
@@ -148,9 +149,45 @@
 	impl<T: Config> Hooks<BlockNumberFor<T>> for Pallet<T> {
 		fn on_runtime_upgrade() -> Weight {
 			if StorageVersion::get::<Pallet<T>>() < StorageVersion::new(1) {
-				<TokenData<T>>::translate_values::<ItemDataVersion1<T::CrossAccountId>, _>(|v| {
+				let mut had_consts = BTreeSet::new();
+				<TokenData<T>>::translate::<ItemDataVersion1<T::CrossAccountId>, _>(|(collection, token), v| {
+					let mut props = vec![];
+					if !v.const_data.is_empty() {
+						props.push(Property {
+							key: b"_old_constData".to_vec().try_into().unwrap(),
+							value: v.const_data.clone().into_inner().try_into().expect("const too long"),
+						});
+						had_consts.insert(collection);
+					}
+					if !v.variable_data.is_empty() {
+						props.push(Property {
+							key: b"_old_variableData".to_vec().try_into().unwrap(),
+							value: v.variable_data.clone().into_inner().try_into().expect("variable too long"),
+						})
+					}
+					if !props.is_empty() {
+						Self::set_scoped_token_properties(
+							collection,
+							token,
+							PropertyScope::None,
+							props.into_iter(),
+						).expect("existing token data exceeds property storage");
+					}
 					Some(<ItemDataVersion2<T::CrossAccountId>>::from(v))
-				})
+				});
+				for collection in had_consts {
+					<PalletCommon<T>>::set_property_permission_unchecked(
+						collection,
+						PropertyKeyPermission {
+							key: b"_old_constData".to_vec().try_into().unwrap(),
+							permission: PropertyPermission {
+								mutable: false,
+								collection_admin: true,
+								token_owner: false,
+							},
+						}
+					).expect("failed to configure permission");
+				}
 			}
 
 			0
@@ -267,7 +304,7 @@
 			<CommonError<T>>::NoPermission
 		);
 
-		if collection.access == AccessMode::AllowList {
+		if collection.permissions.access() == AccessMode::AllowList {
 			collection.check_allowlist(sender)?;
 		}
 
@@ -493,7 +530,7 @@
 			<CommonError<T>>::NoPermission
 		);
 
-		if collection.access == AccessMode::AllowList {
+		if collection.permissions.access() == AccessMode::AllowList {
 			collection.check_allowlist(from)?;
 			collection.check_allowlist(to)?;
 		}
@@ -579,7 +616,7 @@
 	) -> DispatchResult {
 		if !collection.is_owner_or_admin(sender) {
 			ensure!(
-				collection.mint_mode,
+				collection.permissions.mint_mode(),
 				<CommonError<T>>::PublicMintingNotAllowed
 			);
 			collection.check_allowlist(sender)?;
@@ -639,7 +676,7 @@
 				<TokenData<T>>::insert(
 					(collection.id, token),
 					ItemData {
-						const_data: data.const_data.clone(),
+						// const_data: data.const_data.clone(),
 						owner: data.owner.clone(),
 					},
 				);
@@ -756,7 +793,7 @@
 		token: TokenId,
 		spender: Option<&T::CrossAccountId>,
 	) -> DispatchResult {
-		if collection.access == AccessMode::AllowList {
+		if collection.permissions.access() == AccessMode::AllowList {
 			collection.check_allowlist(sender)?;
 			if let Some(spender) = spender {
 				collection.check_allowlist(spender)?;
@@ -791,7 +828,7 @@
 		if spender.conv_eq(from) {
 			return Ok(());
 		}
-		if collection.access == AccessMode::AllowList {
+		if collection.permissions.access() == AccessMode::AllowList {
 			// `from`, `to` checked in [`transfer`]
 			collection.check_allowlist(spender)?;
 		}
@@ -875,7 +912,7 @@
 			);
 			Ok(())
 		}
-		match handle.limits.nesting_rule() {
+		match handle.permissions.nesting() {
 			NestingRule::Disabled => fail!(<CommonError<T>>::NestingIsDisabled),
 			NestingRule::Owner => {
 				ensure_sender_allowed::<T>(handle.id, under, from, sender, nesting_budget)?
--- a/pallets/proxy-rmrk-core/src/lib.rs
+++ b/pallets/proxy-rmrk-core/src/lib.rs
@@ -403,10 +403,8 @@
         nft_type: NftType,
         properties: impl Iterator<Item=Property>
     ) -> Result<TokenId, DispatchError> {
+        todo!("store nft type");
         let data = CreateNftExData {
-            const_data: nft_type.encode()
-                .try_into()
-                .map_err(|_| <Error<T>>::NftTypeEncodeError)?,
             properties: BoundedVec::default(),
             owner: owner.clone(),
         };
@@ -528,13 +526,8 @@
         Ok(nft_property)
     }
 
-    pub fn get_nft_type(collection_id: CollectionId, token_id: TokenId) -> Result<NftType, DispatchError> {
-        let token_data = <TokenData<T>>::get((collection_id, token_id))
-            .ok_or(<Error<T>>::NoAvailableNftId)?;
-
-        let mut const_data = token_data.const_data.as_slice();
-
-        NftType::decode(&mut const_data).map_err(|_| <Error<T>>::NoAvailableNftId.into())
+    pub fn get_nft_type(_collection_id: CollectionId, _token_id: TokenId) -> Result<NftType, DispatchError> {
+        todo!("should get it from properties?")
     }
 
     pub fn ensure_nft_type(collection_id: CollectionId, token_id: TokenId, nft_type: NftType) -> DispatchResult {
--- a/pallets/refungible/src/common.rs
+++ b/pallets/refungible/src/common.rs
@@ -336,11 +336,6 @@
 	fn token_owner(&self, _token: TokenId) -> Option<T::CrossAccountId> {
 		None
 	}
-	fn const_metadata(&self, token: TokenId) -> Vec<u8> {
-		<TokenData<T>>::get((self.id, token))
-			.const_data
-			.into_inner()
-	}
 
 	fn token_property(&self, _token_id: TokenId, _key: &PropertyKey) -> Option<PropertyValue> {
 		None
--- a/pallets/refungible/src/lib.rs
+++ b/pallets/refungible/src/lib.rs
@@ -321,7 +321,7 @@
 			<CommonError<T>>::TransferNotAllowed
 		);
 
-		if collection.access == AccessMode::AllowList {
+		if collection.permissions.access() == AccessMode::AllowList {
 			collection.check_allowlist(from)?;
 			collection.check_allowlist(to)?;
 		}
@@ -424,7 +424,7 @@
 	) -> DispatchResult {
 		if !collection.is_owner_or_admin(sender) {
 			ensure!(
-				collection.mint_mode,
+				collection.permissions.mint_mode(),
 				<CommonError<T>>::PublicMintingNotAllowed
 			);
 			collection.check_allowlist(sender)?;
@@ -566,7 +566,7 @@
 		token: TokenId,
 		amount: u128,
 	) -> DispatchResult {
-		if collection.access == AccessMode::AllowList {
+		if collection.permissions.access() == AccessMode::AllowList {
 			collection.check_allowlist(sender)?;
 			collection.check_allowlist(spender)?;
 		}
@@ -598,7 +598,7 @@
 		if spender.conv_eq(from) {
 			return Ok(None);
 		}
-		if collection.access == AccessMode::AllowList {
+		if collection.permissions.access() == AccessMode::AllowList {
 			// `from`, `to` checked in [`transfer`]
 			collection.check_allowlist(spender)?;
 		}
--- a/pallets/unique/src/benchmarking.rs
+++ b/pallets/unique/src/benchmarking.rs
@@ -130,26 +130,6 @@
 		let collection = create_nft_collection::<T>(caller.clone())?;
 	}: _(RawOrigin::Signed(caller.clone()), collection, false)
 
-	set_offchain_schema {
-		let b in 0..OFFCHAIN_SCHEMA_LIMIT;
-
-		let caller: T::AccountId = account("caller", 0, SEED);
-		let collection = create_nft_collection::<T>(caller.clone())?;
-		let data = create_var_data(b);
-	}: set_offchain_schema(RawOrigin::Signed(caller.clone()), collection, data)
-
-	set_const_on_chain_schema {
-		let b in 0..CONST_ON_CHAIN_SCHEMA_LIMIT;
-
-		let caller: T::AccountId = account("caller", 0, SEED);
-		let collection = create_nft_collection::<T>(caller.clone())?;
-		let data = create_var_data(b);
-	}: set_const_on_chain_schema(RawOrigin::Signed(caller.clone()), collection, data)
-
-	set_schema_version {
-		let caller: T::AccountId = account("caller", 0, SEED);
-		let collection = create_nft_collection::<T>(caller.clone())?;
-	}: set_schema_version(RawOrigin::Signed(caller.clone()), collection, SchemaVersion::Unique)
 
 	set_collection_limits{
 		let caller: T::AccountId = account("caller", 0, SEED);
--- a/pallets/unique/src/lib.rs
+++ b/pallets/unique/src/lib.rs
@@ -35,10 +35,10 @@
 use frame_system::{self as system, ensure_signed};
 use sp_runtime::{sp_std::prelude::Vec};
 use up_data_structs::{
-	CONST_ON_CHAIN_SCHEMA_LIMIT, OFFCHAIN_SCHEMA_LIMIT, MAX_COLLECTION_NAME_LENGTH,
+	MAX_COLLECTION_NAME_LENGTH,
 	MAX_COLLECTION_DESCRIPTION_LENGTH, MAX_TOKEN_PREFIX_LENGTH, AccessMode, CreateItemData,
-	CollectionLimits, CollectionId, CollectionMode, TokenId, SchemaVersion, SponsorshipState,
-	CreateCollectionData, CreateItemExData, budget, CollectionField, Property, PropertyKey,
+	CollectionLimits, CollectionPermissions, CollectionId, CollectionMode, TokenId, SponsorshipState,
+	CreateCollectionData, CreateItemExData, budget, Property, PropertyKey,
 	PropertyKeyPermission,
 };
 use pallet_evm::account::CrossAccountId;
@@ -162,6 +162,8 @@
 		/// * collection_id: Globally unique collection identifier.
 		CollectionLimitSet(CollectionId),
 
+		CollectionPermissionSet(CollectionId),
+
 		/// Mint permission	was set
 		///
 		/// # Arguments
@@ -417,67 +419,6 @@
 			));
 
 			Ok(())
-		}
-
-		/// Toggle between normal and allow list access for the methods with access for `Anyone`.
-		///
-		/// # Permissions
-		///
-		/// * Collection Owner.
-		///
-		/// # Arguments
-		///
-		/// * collection_id.
-		///
-		/// * mode: [AccessMode]
-		#[weight = <SelfWeightOf<T>>::set_public_access_mode()]
-		#[transactional]
-		pub fn set_public_access_mode(origin, collection_id: CollectionId, mode: AccessMode) -> DispatchResult
-		{
-			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);
-
-			let mut target_collection = <CollectionHandle<T>>::try_get(collection_id)?;
-			target_collection.check_is_owner(&sender)?;
-
-			target_collection.access = mode.clone();
-
-			<Pallet<T>>::deposit_event(Event::<T>::PublicAccessModeSet(
-				collection_id,
-				mode
-			));
-
-			target_collection.save()
-		}
-
-		/// Allows Anyone to create tokens if:
-		/// * Allow List is enabled, and
-		/// * Address is added to allow list, and
-		/// * This method was called with True parameter
-		///
-		/// # Permissions
-		/// * Collection Owner
-		///
-		/// # Arguments
-		///
-		/// * collection_id.
-		///
-		/// * mint_permission: Boolean parameter. If True, allows minting to Anyone with conditions above.
-		#[weight = <SelfWeightOf<T>>::set_mint_permission()]
-		#[transactional]
-		pub fn set_mint_permission(origin, collection_id: CollectionId, mint_permission: bool) -> DispatchResult
-		{
-			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);
-
-			let mut target_collection = <CollectionHandle<T>>::try_get(collection_id)?;
-			target_collection.check_is_owner(&sender)?;
-
-			target_collection.mint_mode = mint_permission;
-
-			<Pallet<T>>::deposit_event(Event::<T>::MintPermissionSet(
-				collection_id
-			));
-
-			target_collection.save()
 		}
 
 		/// Change the owner of the collection.
@@ -941,118 +882,42 @@
 			dispatch_call::<T, _>(collection_id, |d| d.transfer_from(sender, from, recipient, item_id, value, &budget))
 		}
 
-		/// Set schema standard
-		/// ImageURL
-		/// Unique
-		///
-		/// # Permissions
-		///
-		/// * Collection Owner
-		/// * Collection Admin
-		///
-		/// # Arguments
-		///
-		/// * collection_id.
-		///
-		/// * schema: SchemaVersion: enum
-		#[weight = <SelfWeightOf<T>>::set_schema_version()]
+		#[weight = <SelfWeightOf<T>>::set_collection_limits()]
 		#[transactional]
-		pub fn set_schema_version(
+		pub fn set_collection_limits(
 			origin,
 			collection_id: CollectionId,
-			version: SchemaVersion
+			new_limit: CollectionLimits,
 		) -> DispatchResult {
 			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);
 			let mut target_collection = <CollectionHandle<T>>::try_get(collection_id)?;
-			target_collection.check_is_owner_or_admin(&sender)?;
-			target_collection.schema_version = version;
-
-			<Pallet<T>>::deposit_event(Event::<T>::SchemaVersionSet(
-				collection_id
-			));
-
-			target_collection.save()
-		}
-
-		/// Set off-chain data schema.
-		///
-		/// # Permissions
-		///
-		/// * Collection Owner
-		/// * Collection Admin
-		///
-		/// # Arguments
-		///
-		/// * collection_id.
-		///
-		/// * schema: String representing the offchain data schema.
-		#[weight = <SelfWeightOf<T>>::set_offchain_schema(schema.len() as u32)]
-		#[transactional]
-		pub fn set_offchain_schema(
-			origin,
-			collection_id: CollectionId,
-			schema: BoundedVec<u8, ConstU32<OFFCHAIN_SCHEMA_LIMIT>>,
-		) -> DispatchResult {
-			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);
-			let collection = <CollectionHandle<T>>::try_get(collection_id)?;
+			target_collection.check_is_owner(&sender)?;
+			let old_limit = &target_collection.limits;
 
-			// =========
+			target_collection.limits = <PalletCommon<T>>::clamp_limits(target_collection.mode.clone(), &old_limit, new_limit)?;
 
-			<PalletCommon<T>>::set_field(&collection, &sender, CollectionField::OffchainSchema, schema.into_inner())?;
-
-			<Pallet<T>>::deposit_event(Event::<T>::OffchainSchemaSet(
+			<Pallet<T>>::deposit_event(Event::<T>::CollectionLimitSet(
 				collection_id
 			));
-			Ok(())
-		}
 
-		/// Set const on-chain data schema.
-		///
-		/// # Permissions
-		///
-		/// * Collection Owner
-		/// * Collection Admin
-		///
-		/// # Arguments
-		///
-		/// * collection_id.
-		///
-		/// * schema: String representing the const on-chain data schema.
-		#[weight = <SelfWeightOf<T>>::set_const_on_chain_schema(schema.len() as u32)]
-		#[transactional]
-		pub fn set_const_on_chain_schema (
-			origin,
-			collection_id: CollectionId,
-			schema: BoundedVec<u8, ConstU32<CONST_ON_CHAIN_SCHEMA_LIMIT>>
-		) -> DispatchResult {
-			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);
-			let collection = <CollectionHandle<T>>::try_get(collection_id)?;
-
-			// =========
-
-			<PalletCommon<T>>::set_field(&collection, &sender, CollectionField::ConstOnChainSchema, schema.into_inner())?;
-
-			<Pallet<T>>::deposit_event(Event::<T>::ConstOnChainSchemaSet(
-				collection_id
-			));
-			Ok(())
+			target_collection.save()
 		}
 
 		#[weight = <SelfWeightOf<T>>::set_collection_limits()]
 		#[transactional]
-		pub fn set_collection_limits(
+		pub fn set_collection_permissions(
 			origin,
 			collection_id: CollectionId,
-			new_limit: CollectionLimits,
+			new_limit: CollectionPermissions,
 		) -> DispatchResult {
 			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);
 			let mut target_collection = <CollectionHandle<T>>::try_get(collection_id)?;
 			target_collection.check_is_owner(&sender)?;
-			let old_limit = &target_collection.limits;
+			let old_limit = &target_collection.permissions;
 
-			target_collection.limits = <PalletCommon<T>>::clamp_limits(target_collection.mode.clone(), &old_limit, new_limit)?;
+			target_collection.permissions = <PalletCommon<T>>::clamp_permissions(target_collection.mode.clone(), &old_limit, new_limit)?;
 
-			<Pallet<T>>::deposit_event(Event::<T>::CollectionLimitSet(
+			<Pallet<T>>::deposit_event(Event::<T>::CollectionPermissionSet(
 				collection_id
 			));
 
--- a/primitives/data-structs/src/lib.rs
+++ b/primitives/data-structs/src/lib.rs
@@ -186,7 +186,6 @@
 #[derive(Encode, Decode, Clone, PartialEq, TypeInfo)]
 #[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]
 pub struct TokenData<CrossAccountId> {
-	pub const_data: Vec<u8>,
 	pub properties: Vec<Property>,
 	pub owner: Option<CrossAccountId>,
 }
@@ -223,7 +222,7 @@
 	fn resolve(who: &AccountId, call: &Call) -> Option<AccountId>;
 }
 
-#[derive(Encode, Decode, Eq, Debug, Clone, PartialEq, TypeInfo, MaxEncodedLen)]
+#[derive(Encode, Decode, Eq, Debug, Clone, Copy, PartialEq, TypeInfo, MaxEncodedLen)]
 #[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]
 pub enum AccessMode {
 	Normal,
@@ -296,22 +295,26 @@
 pub struct Collection<AccountId> {
 	pub owner: AccountId,
 	pub mode: CollectionMode,
+	#[version(..2)]
 	pub access: AccessMode,
 	pub name: BoundedVec<u16, ConstU32<MAX_COLLECTION_NAME_LENGTH>>,
 	pub description: BoundedVec<u16, ConstU32<MAX_COLLECTION_DESCRIPTION_LENGTH>>,
 	pub token_prefix: BoundedVec<u8, ConstU32<MAX_TOKEN_PREFIX_LENGTH>>,
+
+	#[version(..2)]
 	pub mint_mode: bool,
 
 	#[version(..2)]
 	pub offchain_schema: BoundedVec<u8, ConstU32<OFFCHAIN_SCHEMA_LIMIT>>,
 
+	#[version(..2)]
 	pub schema_version: SchemaVersion,
 	pub sponsorship: SponsorshipState<AccountId>,
 
-	#[version(..2)]
-	pub limits: CollectionLimitsVersion1, // Collection private restrictions
-	#[version(2.., upper(limits.into()))]
-	pub limits: CollectionLimitsVersion2,
+	pub limits: CollectionLimits,
+
+	#[version(2.., upper(Default::default()))]
+	pub permissions: CollectionPermissions,
 
 	#[version(..2)]
 	pub variable_on_chain_schema: BoundedVec<u8, ConstU32<VARIABLE_ON_CHAIN_SCHEMA_LIMIT>>,
@@ -329,27 +332,16 @@
 pub struct RpcCollection<AccountId> {
 	pub owner: AccountId,
 	pub mode: CollectionMode,
-	pub access: AccessMode,
 	pub name: Vec<u16>,
 	pub description: Vec<u16>,
 	pub token_prefix: Vec<u8>,
-	pub mint_mode: bool,
-	pub offchain_schema: Vec<u8>,
-	pub schema_version: SchemaVersion,
 	pub sponsorship: SponsorshipState<AccountId>,
 	pub limits: CollectionLimits,
-	pub const_on_chain_schema: Vec<u8>,
+	pub permissions: CollectionPermissions,
 	pub token_property_permissions: Vec<PropertyKeyPermission>,
 	pub properties: Vec<Property>,
 }
 
-#[derive(Encode, Decode, Clone, PartialEq, TypeInfo, MaxEncodedLen)]
-#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]
-pub enum CollectionField {
-	ConstOnChainSchema,
-	OffchainSchema,
-}
-
 #[derive(Encode, Decode, Clone, PartialEq, TypeInfo, Derivative, MaxEncodedLen)]
 #[derivative(Debug, Default(bound = ""))]
 pub struct CreateCollectionData<AccountId> {
@@ -359,11 +351,9 @@
 	pub name: BoundedVec<u16, ConstU32<MAX_COLLECTION_NAME_LENGTH>>,
 	pub description: BoundedVec<u16, ConstU32<MAX_COLLECTION_DESCRIPTION_LENGTH>>,
 	pub token_prefix: BoundedVec<u8, ConstU32<MAX_TOKEN_PREFIX_LENGTH>>,
-	pub offchain_schema: BoundedVec<u8, ConstU32<OFFCHAIN_SCHEMA_LIMIT>>,
-	pub schema_version: Option<SchemaVersion>,
 	pub pending_sponsor: Option<AccountId>,
 	pub limits: Option<CollectionLimits>,
-	pub const_on_chain_schema: BoundedVec<u8, ConstU32<CONST_ON_CHAIN_SCHEMA_LIMIT>>,
+	pub permissions: Option<CollectionPermissions>,
 	pub token_property_permissions: CollectionPropertiesPermissionsVec,
 	pub properties: CollectionPropertiesVec,
 }
@@ -375,7 +365,6 @@
 	BoundedVec<Property, ConstU32<MAX_PROPERTIES_PER_ITEM>>;
 
 /// All fields are wrapped in `Option`s, where None means chain default
-#[struct_versioning::versioned(version = 2, upper)]
 #[derive(Encode, Decode, Debug, Default, Clone, PartialEq, TypeInfo, MaxEncodedLen)]
 #[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]
 pub struct CollectionLimits {
@@ -395,9 +384,6 @@
 	pub owner_can_transfer: Option<bool>,
 	pub owner_can_destroy: Option<bool>,
 	pub transfers_enabled: Option<bool>,
-
-	#[version(2.., upper(None))]
-	pub nesting_rule: Option<NestingRule>,
 }
 
 impl CollectionLimits {
@@ -444,9 +430,26 @@
 			SponsoringRateLimit::Blocks(v) => Some(v.min(MAX_SPONSOR_TIMEOUT)),
 		}
 	}
-	pub fn nesting_rule(&self) -> &NestingRule {
+}
+
+#[derive(Encode, Decode, Debug, Default, Clone, PartialEq, TypeInfo, MaxEncodedLen)]
+#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]
+pub struct CollectionPermissions {
+	pub access: Option<AccessMode>,
+	pub mint_mode: Option<bool>,
+	pub nesting: Option<NestingRule>,
+}
+
+impl CollectionPermissions {
+	pub fn access(&self) -> AccessMode {
+		self.access.unwrap_or(AccessMode::Normal)
+	}
+	pub fn mint_mode(&self) -> bool {
+		self.mint_mode.unwrap_or(false)
+	}
+	pub fn nesting(&self) -> &NestingRule {
 		static DEFAULT: NestingRule = NestingRule::Disabled;
-		self.nesting_rule.as_ref().unwrap_or(&DEFAULT)
+		self.nesting.as_ref().unwrap_or(&DEFAULT)
 	}
 }
 
@@ -520,8 +523,6 @@
 #[derive(Encode, Decode, MaxEncodedLen, PartialEq, Clone, TypeInfo, Derivative)]
 #[derivative(Debug)]
 pub struct CreateNftExData<CrossAccountId> {
-	#[derivative(Debug(format_with = "bounded::vec_debug"))]
-	pub const_data: BoundedVec<u8, CustomDataLimit>,
 	#[derivative(Debug(format_with = "bounded::vec_debug"))]
 	pub properties: CollectionPropertiesVec,
 	pub owner: CrossAccountId,
--- a/primitives/rpc/src/lib.rs
+++ b/primitives/rpc/src/lib.rs
@@ -41,7 +41,6 @@
 
 		fn token_owner(collection: CollectionId, token: TokenId) -> Result<Option<CrossAccountId>>;
 		fn topmost_token_owner(collection: CollectionId, token: TokenId) -> Result<Option<CrossAccountId>>;
-		fn const_metadata(collection: CollectionId, token: TokenId) -> Result<Vec<u8>>;
 
 		fn collection_properties(collection: CollectionId, properties: Option<Vec<Vec<u8>>>) -> Result<Vec<Property>>;
 
--- a/runtime/common/src/runtime_apis.rs
+++ b/runtime/common/src/runtime_apis.rs
@@ -29,9 +29,6 @@
 
                     Ok(Some(<pallet_structure::Pallet<Runtime>>::find_topmost_owner(collection, token, &budget)?))
                 }
-                fn const_metadata(collection: CollectionId, token: TokenId) -> Result<Vec<u8>, DispatchError> {
-                    dispatch_unique_runtime!(collection.const_metadata(token))
-                }
 
                 fn collection_properties(
                     collection: CollectionId,
@@ -73,7 +70,6 @@
                     keys: Option<Vec<Vec<u8>>>
                 ) -> Result<TokenData<CrossAccountId>, DispatchError> {
                     let token_data = TokenData {
-                        const_data: Self::const_metadata(collection, token_id)?,
                         properties: Self::token_properties(collection, token_id, keys)?,
                         owner: Self::token_owner(collection, token_id)?
                     };
--- a/runtime/tests/src/tests.rs
+++ b/runtime/tests/src/tests.rs
@@ -2399,28 +2399,6 @@
 // #endregion
 
 #[test]
-fn set_const_on_chain_schema() {
-	new_test_ext().execute_with(|| {
-		let collection_id = create_test_collection(&CollectionMode::NFT, CollectionId(1));
-
-		let origin1 = Origin::signed(1);
-		assert_ok!(Unique::set_const_on_chain_schema(
-			origin1,
-			collection_id,
-			b"test const on chain schema".to_vec().try_into().unwrap()
-		));
-
-		assert_eq!(
-			<pallet_common::CollectionData<Test>>::get((
-				collection_id,
-				CollectionField::ConstOnChainSchema
-			)),
-			b"test const on chain schema".to_vec()
-		);
-	});
-}
-
-#[test]
 fn collection_transfer_flag_works() {
 	new_test_ext().execute_with(|| {
 		let origin1 = Origin::signed(1);