git.delta.rocks / unique-network / refs/commits / f3ce0b5ee1c5

--- a/client/rpc/src/lib.rs
+++ b/client/rpc/src/lib.rs
@@ -71,13 +71,6 @@
 		token: TokenId,
 		at: Option<BlockHash>,
 	) -> Result<Vec<u8>>;
-	#[rpc(name = "unique_variableMetadata")]
-	fn variable_metadata(
-		&self,
-		collection: CollectionId,
-		token: TokenId,
-		at: Option<BlockHash>,
-	) -> Result<Vec<u8>>;
 
 	#[rpc(name = "unique_collectionProperties")]
 	fn collection_properties(
@@ -279,7 +272,6 @@
 	);
 	pass_method!(topmost_token_owner(collection: CollectionId, token: TokenId) -> Option<CrossAccountId>);
 	pass_method!(const_metadata(collection: CollectionId, token: TokenId) -> Vec<u8>);
-	pass_method!(variable_metadata(collection: CollectionId, token: TokenId) -> Vec<u8>);
 
 	pass_method!(collection_properties(
 		collection: CollectionId,

--- a/pallets/common/src/lib.rs
+++ b/pallets/common/src/lib.rs
@@ -33,7 +33,7 @@
 	MAX_TOKEN_PREFIX_LENGTH, COLLECTION_ADMINS_LIMIT, MetaUpdatePermission, TokenId,
 	CollectionStats, MAX_TOKEN_OWNERSHIP, CollectionMode, NFT_SPONSOR_TRANSFER_TIMEOUT,
 	FUNGIBLE_SPONSOR_TRANSFER_TIMEOUT, REFUNGIBLE_SPONSOR_TRANSFER_TIMEOUT, MAX_SPONSOR_TIMEOUT,
-	CUSTOM_DATA_LIMIT, CollectionLimits, CustomDataLimit, CreateCollectionData, SponsorshipState,
+	CUSTOM_DATA_LIMIT, CollectionLimits, CreateCollectionData, SponsorshipState,
 	CreateItemExData, SponsoringRateLimit, budget::Budget, COLLECTION_FIELD_LIMIT, CollectionField,
 	PhantomType, Property, Properties, PropertiesPermissionMap, PropertyKey, PropertyPermission,
 	PropertiesError, PropertyKeyPermission, TokenData, TrySet,
@@ -312,8 +312,6 @@
 		CollectionTokenPrefixLimitExceeded,
 		/// Total collections bound exceeded.
 		TotalCollectionsLimitExceeded,
-		/// variable_data exceeded data limit.
-		TokenVariableDataLimitExceeded,
 		/// Exceeded max admin count
 		CollectionAdminCountExceeded,
 		/// Collection limit bounds per collection exceeded
@@ -1073,7 +1071,6 @@
 	fn approve() -> Weight;
 	fn transfer_from() -> Weight;
 	fn burn_from() -> Weight;
-	fn set_variable_metadata(bytes: u32) -> Weight;
 }
 
 pub trait CommonCollectionOperations<T: Config> {
@@ -1163,13 +1160,6 @@
 		nesting_budget: &dyn Budget,
 	) -> DispatchResultWithPostInfo;
 
-	fn set_variable_metadata(
-		&self,
-		sender: T::CrossAccountId,
-		token: TokenId,
-		data: BoundedVec<u8, CustomDataLimit>,
-	) -> DispatchResultWithPostInfo;
-
 	fn check_nesting(
 		&self,
 		sender: T::CrossAccountId,
@@ -1185,7 +1175,6 @@
 
 	fn token_owner(&self, token: TokenId) -> Option<T::CrossAccountId>;
 	fn const_metadata(&self, token: TokenId) -> Vec<u8>;
-	fn variable_metadata(&self, token: TokenId) -> Vec<u8>;
 	fn token_properties(&self, token_id: TokenId, keys: Vec<PropertyKey>) -> Vec<Property>;
 	/// Amount of unique collection tokens
 	fn total_supply(&self) -> u32;

--- a/pallets/fungible/src/common.rs
+++ b/pallets/fungible/src/common.rs
@@ -16,12 +16,12 @@
 
 use core::marker::PhantomData;
 
-use frame_support::{dispatch::DispatchResultWithPostInfo, ensure, fail, weights::Weight, BoundedVec};
+use frame_support::{dispatch::DispatchResultWithPostInfo, ensure, fail, weights::Weight};
 use up_data_structs::{TokenId, CollectionId, CreateItemExData, budget::Budget};
 use pallet_common::{CommonCollectionOperations, CommonWeightInfo, with_weight};
 use sp_runtime::ArithmeticError;
 use sp_std::{vec::Vec, vec};
-use up_data_structs::{CustomDataLimit, Property, PropertyKey, PropertyKeyPermission};
+use up_data_structs::{Property, PropertyKey, PropertyKeyPermission};
 
 use crate::{
 	Allowance, Balance, Config, Error, FungibleHandle, Pallet, SelfWeightOf, weights::WeightInfo,
@@ -85,11 +85,6 @@
 	fn burn_from() -> Weight {
 		<SelfWeightOf<T>>::burn_from()
 	}
-
-	fn set_variable_metadata(_bytes: u32) -> Weight {
-		// Error
-		0
-	}
 }
 
 impl<T: Config> CommonCollectionOperations<T> for FungibleHandle<T> {
@@ -287,15 +282,6 @@
 		fail!(<Error<T>>::SettingPropertiesNotAllowed)
 	}
 
-	fn set_variable_metadata(
-		&self,
-		_sender: T::CrossAccountId,
-		_token: TokenId,
-		_data: BoundedVec<u8, CustomDataLimit>,
-	) -> DispatchResultWithPostInfo {
-		fail!(<Error<T>>::FungibleItemsDontHaveData)
-	}
-
 	fn check_nesting(
 		&self,
 		_sender: <T>::CrossAccountId,
@@ -330,9 +316,6 @@
 		None
 	}
 	fn const_metadata(&self, _token: TokenId) -> Vec<u8> {
-		Vec::new()
-	}
-	fn variable_metadata(&self, _token: TokenId) -> Vec<u8> {
 		Vec::new()
 	}
 

--- a/pallets/nonfungible/Cargo.toml
+++ b/pallets/nonfungible/Cargo.toml
@@ -27,6 +27,7 @@
 scale-info = { version = "2.0.1", default-features = false, features = [
     "derive",
 ] }
+struct-versioning = { path = "../../crates/struct-versioning" }
 
 [features]
 default = ["std"]

--- a/pallets/nonfungible/src/benchmarking.rs
+++ b/pallets/nonfungible/src/benchmarking.rs
@@ -28,10 +28,8 @@
 
 fn create_max_item_data<T: Config>(owner: T::CrossAccountId) -> CreateItemData<T> {
 	let const_data = create_data::<CUSTOM_DATA_LIMIT>();
-	let variable_data = create_data::<CUSTOM_DATA_LIMIT>();
 	CreateItemData::<T> {
 		const_data,
-		variable_data,
 		owner,
 	}
 }
@@ -125,14 +123,4 @@
 		let item = create_max_item(&collection, &owner, sender.clone())?;
 		<Pallet<T>>::set_allowance(&collection, &sender, item, Some(&burner))?;
 	}: {<Pallet<T>>::burn_from(&collection, &burner, &sender, item, &Unlimited)?}
-
-	set_variable_metadata {
-		let b in 0..CUSTOM_DATA_LIMIT;
-		bench_init!{
-			owner: sub; collection: collection(owner);
-			owner: cross_from_sub; sender: cross_sub;
-		};
-		let item = create_max_item(&collection, &owner, sender.clone())?;
-		let data = create_var_data(b).try_into().unwrap();
-	}: {<Pallet<T>>::set_variable_metadata(&collection, &sender, item, data)?}
 }

--- a/pallets/nonfungible/src/common.rs
+++ b/pallets/nonfungible/src/common.rs
@@ -16,9 +16,9 @@
 
 use core::marker::PhantomData;
 
-use frame_support::{dispatch::DispatchResultWithPostInfo, ensure, fail, weights::Weight, BoundedVec};
+use frame_support::{dispatch::DispatchResultWithPostInfo, ensure, fail, weights::Weight};
 use up_data_structs::{
-	TokenId, CustomDataLimit, CreateItemExData, CollectionId, budget::Budget, Property,
+	TokenId, CreateItemExData, CollectionId, budget::Budget, Property,
 	PropertyKey, PropertyKeyPermission,
 };
 use pallet_common::{CommonCollectionOperations, CommonWeightInfo, with_weight};
@@ -85,10 +85,6 @@
 
 	fn burn_from() -> Weight {
 		<SelfWeightOf<T>>::burn_from()
-	}
-
-	fn set_variable_metadata(bytes: u32) -> Weight {
-		<SelfWeightOf<T>>::set_variable_metadata(bytes)
 	}
 }
 
@@ -99,7 +95,6 @@
 	match data {
 		up_data_structs::CreateItemData::NFT(data) => Ok(CreateItemData::<T> {
 			const_data: data.const_data,
-			variable_data: data.variable_data,
 			properties: data.properties,
 			owner: to.clone(),
 		}),
@@ -325,19 +320,6 @@
 		} else {
 			Ok(().into())
 		}
-	}
-
-	fn set_variable_metadata(
-		&self,
-		sender: T::CrossAccountId,
-		token: TokenId,
-		data: BoundedVec<u8, CustomDataLimit>,
-	) -> DispatchResultWithPostInfo {
-		let len = data.len();
-		with_weight(
-			<Pallet<T>>::set_variable_metadata(self, &sender, token, data),
-			<CommonWeights<T>>::set_variable_metadata(len as u32),
-		)
 	}
 
 	fn check_nesting(
@@ -376,12 +358,6 @@
 	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 variable_metadata(&self, token: TokenId) -> Vec<u8> {
-		<TokenData<T>>::get((self.id, token))
-			.map(|t| t.variable_data)
 			.unwrap_or_default()
 			.into_inner()
 	}

--- a/pallets/nonfungible/src/erc.rs
+++ b/pallets/nonfungible/src/erc.rs
@@ -24,7 +24,7 @@
 use up_data_structs::{TokenId, SchemaVersion};
 use pallet_evm_coder_substrate::dispatch_to_evm;
 use sp_core::{H160, U256};
-use sp_std::{vec::Vec, vec};
+use sp_std::vec::Vec;
 use pallet_common::{
 	erc::{CommonEvmHandler, PrecompileResult, CollectionPropertiesCall},
 	CollectionHandle,
@@ -274,7 +274,6 @@
 			&caller,
 			CreateItemData::<T> {
 				const_data: BoundedVec::default(),
-				variable_data: BoundedVec::default(),
 				properties: BoundedVec::default(),
 				owner: to,
 			},
@@ -322,7 +321,6 @@
 				const_data: Vec::<u8>::from(token_uri)
 					.try_into()
 					.map_err(|_| "token uri is too long")?,
-				variable_data: BoundedVec::default(),
 				properties: BoundedVec::default(),
 				owner: to,
 			},
@@ -387,37 +385,6 @@
 			.into())
 	}
 
-	#[weight(<SelfWeightOf<T>>::set_variable_metadata(data.len() as u32))]
-	fn set_variable_metadata(
-		&mut self,
-		caller: caller,
-		token_id: uint256,
-		data: bytes,
-	) -> Result<void> {
-		let caller = T::CrossAccountId::from_eth(caller);
-		let token = token_id.try_into()?;
-
-		<Pallet<T>>::set_variable_metadata(
-			self,
-			&caller,
-			token,
-			data.try_into()
-				.map_err(|_| "metadata size exceeded limit")?,
-		)
-		.map_err(dispatch_to_evm::<T>)?;
-		Ok(())
-	}
-
-	fn get_variable_metadata(&self, token_id: uint256) -> Result<bytes> {
-		self.consume_store_reads(1)?;
-		let token: TokenId = token_id.try_into()?;
-
-		Ok(<TokenData<T>>::get((self.id, token))
-			.ok_or("token not found")?
-			.variable_data
-			.into_inner())
-	}
-
 	#[weight(<SelfWeightOf<T>>::create_multiple_items(token_ids.len() as u32))]
 	fn mint_bulk(&mut self, caller: caller, to: address, token_ids: Vec<uint256>) -> Result<bool> {
 		let caller = T::CrossAccountId::from_eth(caller);
@@ -440,7 +407,6 @@
 		let data = (0..total_tokens)
 			.map(|_| CreateItemData::<T> {
 				const_data: BoundedVec::default(),
-				variable_data: BoundedVec::default(),
 				properties: BoundedVec::default(),
 				owner: to.clone(),
 			})
@@ -484,7 +450,6 @@
 				const_data: Vec::<u8>::from(token_uri)
 					.try_into()
 					.map_err(|_| "token uri is too long")?,
-				variable_data: vec![].try_into().unwrap(),
 				properties: BoundedVec::default(),
 				owner: to.clone(),
 			});

--- a/pallets/nonfungible/src/lib.rs
+++ b/pallets/nonfungible/src/lib.rs
@@ -49,17 +49,22 @@
 pub type CreateItemData<T> = CreateNftExData<<T as pallet_evm::account::Config>::CrossAccountId>;
 pub(crate) type SelfWeightOf<T> = <T as Config>::WeightInfo;
 
+#[struct_versioning::versioned(version = 2, upper)]
 #[derive(Encode, Decode, TypeInfo, MaxEncodedLen)]
 pub struct ItemData<CrossAccountId> {
 	pub const_data: BoundedVec<u8, CustomDataLimit>,
+
+	#[version(..2)]
 	pub variable_data: BoundedVec<u8, CustomDataLimit>,
+
 	pub owner: CrossAccountId,
 }
 
 #[frame_support::pallet]
 pub mod pallet {
 	use super::*;
-	use frame_support::{Blake2_128Concat, Twox64Concat, pallet_prelude::*, storage::Key};
+	use frame_support::{Blake2_128Concat, Twox64Concat, pallet_prelude::*, storage::Key, traits::StorageVersion};
+	use frame_system::pallet_prelude::*;
 	use up_data_structs::{CollectionId, TokenId};
 	use super::weights::WeightInfo;
 
@@ -78,7 +83,10 @@
 		type WeightInfo: WeightInfo;
 	}
 
+	const STORAGE_VERSION: StorageVersion = StorageVersion::new(1);
+
 	#[pallet::pallet]
+	#[pallet::storage_version(STORAGE_VERSION)]
 	#[pallet::generate_store(pub(super) trait Store)]
 	pub struct Pallet<T>(_);
 
@@ -133,6 +141,19 @@
 		Value = T::CrossAccountId,
 		QueryKind = OptionQuery,
 	>;
+
+	#[pallet::hooks]
+	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| {
+					Some(<ItemDataVersion2<T::CrossAccountId>>::from(v))
+				})
+			}
+
+			0
+		}
+	}
 }
 
 pub struct NonfungibleHandle<T: Config>(pallet_common::CollectionHandle<T>);
@@ -577,7 +598,6 @@
 				(collection.id, token),
 				ItemData {
 					const_data: data.const_data,
-					variable_data: data.variable_data,
 					owner: data.owner.clone(),
 				},
 			);
@@ -773,28 +793,6 @@
 		// =========
 
 		Self::burn(collection, from, token)
-	}
-
-	pub fn set_variable_metadata(
-		collection: &NonfungibleHandle<T>,
-		sender: &T::CrossAccountId,
-		token: TokenId,
-		data: BoundedVec<u8, CustomDataLimit>,
-	) -> DispatchResult {
-		let token_data =
-			<TokenData<T>>::get((collection.id, token)).ok_or(<CommonError<T>>::TokenNotFound)?;
-		collection.check_can_update_meta(sender, &token_data.owner)?;
-
-		// =========
-
-		<TokenData<T>>::insert(
-			(collection.id, token),
-			ItemData {
-				variable_data: data,
-				..token_data
-			},
-		);
-		Ok(())
 	}
 
 	pub fn check_nesting(

--- a/pallets/nonfungible/src/stubs/UniqueNFT.sol
+++ b/pallets/nonfungible/src/stubs/UniqueNFT.sol
@@ -61,6 +61,24 @@
 	}
 }
 
+// Selector: 56fd500b
+contract CollectionProperties is Dummy, ERC165 {
+	// Selector: setProperty(string,string) 62d9491f
+	function setProperty(string memory key, string memory value) public {
+		require(false, stub_error);
+		key;
+		value;
+		dummy = 0;
+	}
+
+	// Selector: deleteProperty(string) 34241914
+	function deleteProperty(string memory key) public {
+		require(false, stub_error);
+		key;
+		dummy = 0;
+	}
+}
+
 // Selector: 58800161
 contract ERC721 is Dummy, ERC165, ERC721Events {
 	// Selector: balanceOf(address) 70a08231
@@ -276,7 +294,7 @@
 	}
 }
 
-// Selector: e562194d
+// Selector: d74d154f
 contract ERC721UniqueExtensions is Dummy, ERC165 {
 	// Selector: transfer(address,uint256) a9059cbb
 	function transfer(address to, uint256 tokenId) public {
@@ -301,26 +319,6 @@
 		return 0;
 	}
 
-	// Selector: setVariableMetadata(uint256,bytes) d4eac26d
-	function setVariableMetadata(uint256 tokenId, bytes memory data) public {
-		require(false, stub_error);
-		tokenId;
-		data;
-		dummy = 0;
-	}
-
-	// Selector: getVariableMetadata(uint256) e6c5ce6f
-	function getVariableMetadata(uint256 tokenId)
-		public
-		view
-		returns (bytes memory)
-	{
-		require(false, stub_error);
-		tokenId;
-		dummy;
-		return hex"";
-	}
-
 	// Selector: mintBulk(address,uint256[]) 44a9945e
 	function mintBulk(address to, uint256[] memory tokenIds)
 		public
@@ -354,5 +352,6 @@
 	ERC721Enumerable,
 	ERC721UniqueExtensions,
 	ERC721Mintable,
-	ERC721Burnable
+	ERC721Burnable,
+	CollectionProperties
 {}

--- a/pallets/nonfungible/src/weights.rs
+++ b/pallets/nonfungible/src/weights.rs
@@ -45,7 +45,6 @@
 	fn approve() -> Weight;
 	fn transfer_from() -> Weight;
 	fn burn_from() -> Weight;
-	fn set_variable_metadata(b: u32, ) -> Weight;
 }
 
 /// Weights for pallet_nonfungible using the Substrate node and recommended hardware.
@@ -155,12 +154,6 @@
 		(27_580_000 as Weight)
 			.saturating_add(T::DbWeight::get().reads(4 as Weight))
 			.saturating_add(T::DbWeight::get().writes(5 as Weight))
-	}
-	// Storage: Nonfungible TokenData (r:1 w:1)
-	fn set_variable_metadata(_b: u32, ) -> Weight {
-		(7_700_000 as Weight)
-			.saturating_add(T::DbWeight::get().reads(1 as Weight))
-			.saturating_add(T::DbWeight::get().writes(1 as Weight))
 	}
 }
 
@@ -270,11 +263,5 @@
 		(27_580_000 as Weight)
 			.saturating_add(RocksDbWeight::get().reads(4 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(5 as Weight))
-	}
-	// Storage: Nonfungible TokenData (r:1 w:1)
-	fn set_variable_metadata(_b: u32, ) -> Weight {
-		(7_700_000 as Weight)
-			.saturating_add(RocksDbWeight::get().reads(1 as Weight))
-			.saturating_add(RocksDbWeight::get().writes(1 as Weight))
 	}
 }

--- a/pallets/refungible/Cargo.toml
+++ b/pallets/refungible/Cargo.toml
@@ -24,6 +24,7 @@
 scale-info = { version = "2.0.1", default-features = false, features = [
     "derive",
 ] }
+struct-versioning = { path = "../../crates/struct-versioning" }
 
 [features]
 default = ["std"]

--- a/pallets/refungible/src/benchmarking.rs
+++ b/pallets/refungible/src/benchmarking.rs
@@ -31,10 +31,8 @@
 	users: impl IntoIterator<Item = (CrossAccountId, u128)>,
 ) -> CreateRefungibleExData<CrossAccountId> {
 	let const_data = create_data::<CUSTOM_DATA_LIMIT>();
-	let variable_data = create_data::<CUSTOM_DATA_LIMIT>();
 	CreateRefungibleExData {
 		const_data,
-		variable_data,
 		users: users
 			.into_iter()
 			.collect::<BTreeMap<_, _>>()
@@ -203,14 +201,4 @@
 		let item = create_max_item(&collection, &owner, [(sender.clone(), 200)])?;
 		<Pallet<T>>::set_allowance(&collection, &sender, &burner, item, 200)?;
 	}: {<Pallet<T>>::burn_from(&collection, &burner, &sender, item, 200, &Unlimited)?}
-
-	set_variable_metadata {
-		let b in 0..CUSTOM_DATA_LIMIT;
-		bench_init!{
-			owner: sub; collection: collection(owner);
-			sender: cross_from_sub(owner);
-		};
-		let item = create_max_item(&collection, &sender, [(sender.clone(), 200)])?;
-		let data = create_var_data(b).try_into().unwrap();
-	}: {<Pallet<T>>::set_variable_metadata(&collection, &sender, item, data)?}
 }

--- a/pallets/refungible/src/common.rs
+++ b/pallets/refungible/src/common.rs
@@ -17,9 +17,9 @@
 use core::marker::PhantomData;
 
 use sp_std::collections::btree_map::BTreeMap;
-use frame_support::{dispatch::DispatchResultWithPostInfo, fail, weights::Weight, BoundedVec};
+use frame_support::{dispatch::DispatchResultWithPostInfo, fail, weights::Weight};
 use up_data_structs::{
-	CollectionId, TokenId, CustomDataLimit, CreateItemExData, CreateRefungibleExData,
+	CollectionId, TokenId, CreateItemExData, CreateRefungibleExData,
 	budget::Budget, Property, PropertyKey, PropertyKeyPermission,
 };
 use pallet_common::{CommonCollectionOperations, CommonWeightInfo, with_weight};
@@ -110,10 +110,6 @@
 
 	fn burn_from() -> Weight {
 		<SelfWeightOf<T>>::burn_from()
-	}
-
-	fn set_variable_metadata(bytes: u32) -> Weight {
-		<SelfWeightOf<T>>::set_variable_metadata(bytes)
 	}
 }
 
@@ -124,7 +120,6 @@
 	match data {
 		up_data_structs::CreateItemData::ReFungible(data) => Ok(CreateRefungibleExData {
 			const_data: data.const_data,
-			variable_data: data.variable_data,
 			users: {
 				let mut out = BTreeMap::new();
 				out.insert(to.clone(), data.pieces);
@@ -306,19 +301,6 @@
 		fail!(<Error<T>>::SettingPropertiesNotAllowed)
 	}
 
-	fn set_variable_metadata(
-		&self,
-		sender: T::CrossAccountId,
-		token: TokenId,
-		data: BoundedVec<u8, CustomDataLimit>,
-	) -> DispatchResultWithPostInfo {
-		let len = data.len();
-		with_weight(
-			<Pallet<T>>::set_variable_metadata(self, &sender, token, data),
-			<CommonWeights<T>>::set_variable_metadata(len as u32),
-		)
-	}
-
 	fn check_nesting(
 		&self,
 		_sender: <T>::CrossAccountId,
@@ -355,11 +337,6 @@
 	fn const_metadata(&self, token: TokenId) -> Vec<u8> {
 		<TokenData<T>>::get((self.id, token))
 			.const_data
-			.into_inner()
-	}
-	fn variable_metadata(&self, token: TokenId) -> Vec<u8> {
-		<TokenData<T>>::get((self.id, token))
-			.variable_data
 			.into_inner()
 	}
 

--- a/pallets/refungible/src/weights.rs
+++ b/pallets/refungible/src/weights.rs
@@ -53,7 +53,6 @@
 	fn transfer_from_removing() -> Weight;
 	fn transfer_from_creating_removing() -> Weight;
 	fn burn_from() -> Weight;
-	fn set_variable_metadata(b: u32, ) -> Weight;
 }
 
 /// Weights for pallet_refungible using the Substrate node and recommended hardware.
@@ -242,12 +241,6 @@
 		(42_043_000 as Weight)
 			.saturating_add(T::DbWeight::get().reads(5 as Weight))
 			.saturating_add(T::DbWeight::get().writes(7 as Weight))
-	}
-	// Storage: Refungible TokenData (r:1 w:1)
-	fn set_variable_metadata(_b: u32, ) -> Weight {
-		(7_364_000 as Weight)
-			.saturating_add(T::DbWeight::get().reads(1 as Weight))
-			.saturating_add(T::DbWeight::get().writes(1 as Weight))
 	}
 }
 
@@ -436,11 +429,5 @@
 		(42_043_000 as Weight)
 			.saturating_add(RocksDbWeight::get().reads(5 as Weight))
 			.saturating_add(RocksDbWeight::get().writes(7 as Weight))
-	}
-	// Storage: Refungible TokenData (r:1 w:1)
-	fn set_variable_metadata(_b: u32, ) -> Weight {
-		(7_364_000 as Weight)
-			.saturating_add(RocksDbWeight::get().reads(1 as Weight))
-			.saturating_add(RocksDbWeight::get().writes(1 as Weight))
 	}
 }

--- a/pallets/unique/src/lib.rs
+++ b/pallets/unique/src/lib.rs
@@ -38,7 +38,7 @@
 	CONST_ON_CHAIN_SCHEMA_LIMIT, OFFCHAIN_SCHEMA_LIMIT,
 	MAX_COLLECTION_NAME_LENGTH, MAX_COLLECTION_DESCRIPTION_LENGTH, MAX_TOKEN_PREFIX_LENGTH,
 	AccessMode, CreateItemData, CollectionLimits, CollectionId, CollectionMode, TokenId,
-	SchemaVersion, SponsorshipState, MetaUpdatePermission, CreateCollectionData, CustomDataLimit,
+	SchemaVersion, SponsorshipState, MetaUpdatePermission, CreateCollectionData,
 	CreateItemExData, budget, CollectionField, Property, PropertyKey, PropertyKeyPermission,
 };
 use pallet_evm::account::CrossAccountId;
@@ -238,9 +238,6 @@
 		pub ReFungibleTransferBasket get(fn refungible_transfer_basket): nmap hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId, hasher(twox_64_concat) T::AccountId => Option<T::BlockNumber>;
 		//#endregion
 
-		/// Variable metadata sponsoring
-		/// Collection id (controlled?2), token id (controlled?2)
-		pub VariableMetaDataBasket get(fn variable_meta_data_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => Option<T::BlockNumber>;
 		/// Approval sponsoring
 		pub NftApproveBasket get(fn nft_approve_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => Option<T::BlockNumber>;
 		pub FungibleApproveBasket get(fn fungible_approve_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(twox_64_concat) T::AccountId => Option<T::BlockNumber>;
@@ -333,7 +330,6 @@
 			<FungibleTransferBasket<T>>::remove_prefix(collection_id, None);
 			<ReFungibleTransferBasket<T>>::remove_prefix((collection_id,), None);
 
-			<VariableMetaDataBasket<T>>::remove_prefix(collection_id, None);
 			<NftApproveBasket<T>>::remove_prefix(collection_id, None);
 			<FungibleApproveBasket<T>>::remove_prefix(collection_id, None);
 			<RefungibleApproveBasket<T>>::remove_prefix((collection_id,), None);
@@ -929,31 +925,6 @@
 			let budget = budget::Value::new(2);
 
 			dispatch_call::<T, _>(collection_id, |d| d.transfer_from(sender, from, recipient, item_id, value, &budget))
-		}
-
-		/// Set off-chain data schema.
-		///
-		/// # Permissions
-		///
-		/// * Collection Owner
-		/// * Collection Admin
-		///
-		/// # Arguments
-		///
-		/// * collection_id.
-		///
-		/// * schema: String representing the offchain data schema.
-		#[weight = T::CommonWeightInfo::set_variable_metadata(data.len() as u32)]
-		#[transactional]
-		pub fn set_variable_meta_data (
-			origin,
-			collection_id: CollectionId,
-			item_id: TokenId,
-			data: BoundedVec<u8, CustomDataLimit>,
-		) -> DispatchResultWithPostInfo {
-			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);
-
-			dispatch_call::<T, _>(collection_id, |d| d.set_variable_metadata(sender, item_id, data))
 		}
 
 		/// Set meta_update_permission value for particular collection

--- a/primitives/data-structs/src/lib.rs
+++ b/primitives/data-structs/src/lib.rs
@@ -364,28 +364,6 @@
 pub type CollectionPropertiesVec =
 	BoundedVec<Property, ConstU32<MAX_COLLECTION_PROPERTIES_ENCODE_LEN>>;
 
-#[derive(Encode, Decode, Debug, Clone, PartialEq, TypeInfo)]
-#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]
-pub struct NftItemType<AccountId> {
-	pub owner: AccountId,
-	pub const_data: Vec<u8>,
-	pub variable_data: Vec<u8>,
-}
-
-#[derive(Encode, Decode, Default, Debug, Clone, PartialEq, TypeInfo)]
-#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]
-pub struct FungibleItemType {
-	pub value: u128,
-}
-
-#[derive(Encode, Decode, Debug, Clone, PartialEq, TypeInfo)]
-#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]
-pub struct ReFungibleItemType<AccountId> {
-	pub owner: Vec<Ownership<AccountId>>,
-	pub const_data: Vec<u8>,
-	pub variable_data: Vec<u8>,
-}
-
 /// 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)]
@@ -393,6 +371,8 @@
 pub struct CollectionLimits {
 	pub account_token_ownership_limit: Option<u32>,
 	pub sponsored_data_size: Option<u32>,
+
+	/// FIXME should we delete this or repurpose it?
 	/// None - setVariableMetadata is not sponsored
 	/// Some(v) - setVariableMetadata is sponsored
 	///           if there is v block between txs
@@ -490,9 +470,6 @@
 	#[cfg_attr(feature = "serde1", serde(with = "bounded::vec_serde"))]
 	#[derivative(Debug(format_with = "bounded::vec_debug"))]
 	pub const_data: BoundedVec<u8, CustomDataLimit>,
-	#[cfg_attr(feature = "serde1", serde(with = "bounded::vec_serde"))]
-	#[derivative(Debug(format_with = "bounded::vec_debug"))]
-	pub variable_data: BoundedVec<u8, CustomDataLimit>,
 
 	#[cfg_attr(feature = "serde1", serde(with = "bounded::vec_serde"))]
 	#[derivative(Debug(format_with = "bounded::vec_debug"))]
@@ -512,9 +489,6 @@
 	#[cfg_attr(feature = "serde1", serde(with = "bounded::vec_serde"))]
 	#[derivative(Debug(format_with = "bounded::vec_debug"))]
 	pub const_data: BoundedVec<u8, CustomDataLimit>,
-	#[cfg_attr(feature = "serde1", serde(with = "bounded::vec_serde"))]
-	#[derivative(Debug(format_with = "bounded::vec_debug"))]
-	pub variable_data: BoundedVec<u8, CustomDataLimit>,
 	pub pieces: u128,
 }
 
@@ -545,8 +519,6 @@
 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 variable_data: BoundedVec<u8, CustomDataLimit>,
 	#[derivative(Debug(format_with = "bounded::vec_debug"))]
 	pub properties: CollectionPropertiesVec,
 	pub owner: CrossAccountId,
@@ -557,8 +529,6 @@
 pub struct CreateRefungibleExData<CrossAccountId> {
 	#[derivative(Debug(format_with = "bounded::vec_debug"))]
 	pub const_data: BoundedVec<u8, CustomDataLimit>,
-	#[derivative(Debug(format_with = "bounded::vec_debug"))]
-	pub variable_data: BoundedVec<u8, CustomDataLimit>,
 	#[derivative(Debug(format_with = "bounded::map_debug"))]
 	pub users: BoundedBTreeMap<CrossAccountId, u128, ConstU32<MAX_ITEMS_PER_BATCH>>,
 }
@@ -586,8 +556,8 @@
 impl CreateItemData {
 	pub fn data_size(&self) -> usize {
 		match self {
-			CreateItemData::NFT(data) => data.variable_data.len() + data.const_data.len(),
-			CreateItemData::ReFungible(data) => data.variable_data.len() + data.const_data.len(),
+			CreateItemData::NFT(data) => data.const_data.len(),
+			CreateItemData::ReFungible(data) => data.const_data.len(),
 			_ => 0,
 		}
 	}

--- a/primitives/rpc/src/lib.rs
+++ b/primitives/rpc/src/lib.rs
@@ -42,7 +42,6 @@
 		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 variable_metadata(collection: CollectionId, token: TokenId) -> Result<Vec<u8>>;
 
 		fn collection_properties(collection: CollectionId, properties: Vec<Vec<u8>>) -> Result<Vec<Property>>;
 

--- a/runtime/common/src/runtime_apis.rs
+++ b/runtime/common/src/runtime_apis.rs
@@ -32,9 +32,6 @@
                 fn const_metadata(collection: CollectionId, token: TokenId) -> Result<Vec<u8>, DispatchError> {
                     dispatch_unique_runtime!(collection.const_metadata(token))
                 }
-                fn variable_metadata(collection: CollectionId, token: TokenId) -> Result<Vec<u8>, DispatchError> {
-                    dispatch_unique_runtime!(collection.variable_metadata(token))
-                }
 
                 fn collection_properties(
                     collection: CollectionId,

--- a/runtime/common/src/sponsoring.rs
+++ b/runtime/common/src/sponsoring.rs
@@ -21,7 +21,7 @@
 	storage::{StorageMap, StorageDoubleMap, StorageNMap},
 };
 use up_data_structs::{
-	CollectionId, FUNGIBLE_SPONSOR_TRANSFER_TIMEOUT, MetaUpdatePermission,
+	CollectionId, FUNGIBLE_SPONSOR_TRANSFER_TIMEOUT,
 	NFT_SPONSOR_TRANSFER_TIMEOUT, REFUNGIBLE_SPONSOR_TRANSFER_TIMEOUT, TokenId, CollectionMode,
 	CreateItemData,
 };
@@ -30,7 +30,7 @@
 use pallet_evm::account::CrossAccountId;
 use pallet_unique::{
 	Call as UniqueCall, Config as UniqueConfig, FungibleApproveBasket, RefungibleApproveBasket,
-	NftApproveBasket, VariableMetaDataBasket, CreateItemBasket, ReFungibleTransferBasket,
+	NftApproveBasket, CreateItemBasket, ReFungibleTransferBasket,
 	FungibleTransferBasket, NftTransferBasket,
 };
 use pallet_fungible::Config as FungibleConfig;
@@ -139,64 +139,7 @@
 
 	Some(())
 }
-
-pub fn withdraw_set_variable_meta_data<T: Config>(
-	who: &T::CrossAccountId,
-	collection: &CollectionHandle<T>,
-	item_id: &TokenId,
-	data: &[u8],
-) -> Option<()> {
-	// TODO: make it work for admins
-	if collection.meta_update_permission != MetaUpdatePermission::ItemOwner {
-		return None;
-	}
-	// preliminary sponsoring correctness check
-	match collection.mode {
-		CollectionMode::NFT => {
-			let owner = pallet_nonfungible::TokenData::<T>::get((collection.id, item_id))?.owner;
-			if !owner.conv_eq(who) {
-				return None;
-			}
-		}
-		CollectionMode::Fungible(_) => {
-			if item_id != &TokenId::default() {
-				return None;
-			}
-			if <pallet_fungible::Balance<T>>::get((collection.id, who)) == 0 {
-				return None;
-			}
-		}
-		CollectionMode::ReFungible => {
-			if !<pallet_refungible::Owned<T>>::get((collection.id, who, item_id)) {
-				return None;
-			}
-		}
-	}
 
-	// Can't sponsor fungible collection, this tx will be rejected
-	// as invalid
-	if matches!(collection.mode, CollectionMode::Fungible(_)) {
-		return None;
-	}
-	if data.len() > collection.limits.sponsored_data_size() as usize {
-		return None;
-	}
-
-	let block_number = <frame_system::Pallet<T>>::block_number() as T::BlockNumber;
-	let limit = collection.limits.sponsored_data_rate_limit()?;
-
-	if let Some(last_tx_block) = VariableMetaDataBasket::<T>::get(collection.id, item_id) {
-		let timeout = last_tx_block + limit.into();
-		if block_number < timeout {
-			return None;
-		}
-	}
-
-	<VariableMetaDataBasket<T>>::insert(collection.id, item_id, block_number);
-
-	Some(())
-}
-
 pub fn withdraw_approve<T: Config>(
 	collection: &CollectionHandle<T>,
 	who: &T::AccountId,
@@ -290,20 +233,6 @@
 			} => {
 				let (sponsor, collection) = load(*collection_id)?;
 				withdraw_approve::<T>(&collection, who, item_id).map(|()| sponsor)
-			}
-			UniqueCall::set_variable_meta_data {
-				collection_id,
-				item_id,
-				data,
-			} => {
-				let (sponsor, collection) = load(*collection_id)?;
-				withdraw_set_variable_meta_data::<T>(
-					&T::CrossAccountId::from_sub(who.clone()),
-					&collection,
-					item_id,
-					data,
-				)
-				.map(|()| sponsor)
 			}
 			_ => None,
 		}

--- a/runtime/common/src/weights.rs
+++ b/runtime/common/src/weights.rs
@@ -86,10 +86,6 @@
 		dispatch_weight::<T>() + max_weight_of!(transfer_from())
 	}
 
-	fn set_variable_metadata(bytes: u32) -> Weight {
-		dispatch_weight::<T>() + max_weight_of!(set_variable_metadata(bytes))
-	}
-
 	fn burn_from() -> Weight {
 		dispatch_weight::<T>() + max_weight_of!(burn_from())
 	}

--- a/runtime/tests/src/tests.rs
+++ b/runtime/tests/src/tests.rs
@@ -47,7 +47,6 @@
 fn default_nft_data() -> CreateNftData {
 	CreateNftData {
 		const_data: vec![1, 2, 3].try_into().unwrap(),
-		variable_data: vec![3, 2, 1].try_into().unwrap(),
 	}
 }
 
@@ -58,7 +57,6 @@
 fn default_re_fungible_data() -> CreateReFungibleData {
 	CreateReFungibleData {
 		const_data: vec![1, 2, 3].try_into().unwrap(),
-		variable_data: vec![3, 2, 1].try_into().unwrap(),
 		pieces: 1023,
 	}
 }
@@ -215,7 +213,6 @@
 
 		let item = <pallet_nonfungible::TokenData<Test>>::get((collection_id, 1)).unwrap();
 		assert_eq!(item.const_data, data.const_data.into_inner());
-		assert_eq!(item.variable_data, data.variable_data.into_inner());
 	});
 }
 
@@ -247,7 +244,6 @@
 			))
 			.unwrap();
 			assert_eq!(item.const_data.to_vec(), data.const_data.into_inner());
-			assert_eq!(item.variable_data.to_vec(), data.variable_data.into_inner());
 		}
 	});
 }
@@ -263,7 +259,6 @@
 		let balance =
 			<pallet_refungible::Balance<Test>>::get((collection_id, TokenId(1), account(1)));
 		assert_eq!(item.const_data, data.const_data.into_inner());
-		assert_eq!(item.variable_data, data.variable_data.into_inner());
 		assert_eq!(balance, 1023);
 	});
 }
@@ -299,7 +294,6 @@
 			let balance =
 				<pallet_refungible::Balance<Test>>::get((CollectionId(1), TokenId(1), account(1)));
 			assert_eq!(item.const_data.to_vec(), data.const_data.into_inner());
-			assert_eq!(item.variable_data.to_vec(), data.variable_data.into_inner());
 			assert_eq!(balance, 1023);
 		}
 	});
@@ -413,7 +407,6 @@
 		create_test_item(collection_id, &data.clone().into());
 		let item = <pallet_refungible::TokenData<Test>>::get((collection_id, TokenId(1)));
 		assert_eq!(item.const_data, data.const_data.into_inner());
-		assert_eq!(item.variable_data, data.variable_data.into_inner());
 		assert_eq!(
 			<pallet_refungible::AccountBalance<Test>>::get((collection_id, account(1))),
 			1
@@ -2427,117 +2420,6 @@
 }
 
 #[test]
-fn set_variable_meta_data_on_nft_token_stores_variable_meta_data() {
-	new_test_ext().execute_with(|| {
-		let collection_id = create_test_collection(&CollectionMode::NFT, CollectionId(1));
-
-		let origin1 = Origin::signed(1);
-
-		let data = default_nft_data();
-		create_test_item(CollectionId(1), &data.into());
-
-		let variable_data = b"test data".to_vec();
-		assert_ok!(Unique::set_variable_meta_data(
-			origin1,
-			collection_id,
-			TokenId(1),
-			variable_data.clone().try_into().unwrap()
-		));
-
-		assert_eq!(
-			<pallet_nonfungible::TokenData<Test>>::get((collection_id, 1))
-				.unwrap()
-				.variable_data,
-			variable_data
-		);
-	});
-}
-
-#[test]
-fn set_variable_meta_data_on_re_fungible_token_stores_variable_meta_data() {
-	new_test_ext().execute_with(|| {
-		let collection_id = create_test_collection(&CollectionMode::ReFungible, CollectionId(1));
-
-		let origin1 = Origin::signed(1);
-
-		let data = default_re_fungible_data();
-		create_test_item(collection_id, &data.into());
-
-		let variable_data = b"test data".to_vec();
-		assert_ok!(Unique::set_variable_meta_data(
-			origin1,
-			collection_id,
-			TokenId(1),
-			variable_data.clone().try_into().unwrap()
-		));
-
-		assert_eq!(
-			<pallet_refungible::TokenData<Test>>::get((collection_id, TokenId(1))).variable_data,
-			variable_data
-		);
-	});
-}
-
-#[test]
-fn set_variable_meta_data_on_fungible_token_fails() {
-	new_test_ext().execute_with(|| {
-		let collection_id = create_test_collection(&CollectionMode::Fungible(3), CollectionId(1));
-
-		let origin1 = Origin::signed(1);
-
-		let data = default_fungible_data();
-		create_test_item(collection_id, &data.into());
-
-		let variable_data = b"test data".to_vec();
-		assert_noop!(
-			Unique::set_variable_meta_data(
-				origin1,
-				collection_id,
-				TokenId(0),
-				variable_data.try_into().unwrap()
-			)
-			.map_err(|e| e.error),
-			<pallet_fungible::Error<Test>>::FungibleItemsDontHaveData
-		);
-	});
-}
-
-#[test]
-fn set_variable_meta_data_on_nft_with_item_owner_permission_flag() {
-	new_test_ext().execute_with(|| {
-		//default_limits();
-
-		let collection_id = create_test_collection(&CollectionMode::NFT, CollectionId(1));
-
-		let origin1 = Origin::signed(1);
-
-		let data = default_nft_data();
-		create_test_item(collection_id, &data.into());
-
-		assert_ok!(Unique::set_meta_update_permission_flag(
-			origin1.clone(),
-			collection_id,
-			MetaUpdatePermission::ItemOwner,
-		));
-
-		let variable_data = b"ten chars.".to_vec();
-		assert_ok!(Unique::set_variable_meta_data(
-			origin1,
-			collection_id,
-			TokenId(1),
-			variable_data.clone().try_into().unwrap()
-		));
-
-		assert_eq!(
-			<pallet_nonfungible::TokenData<Test>>::get((collection_id, TokenId(1)))
-				.unwrap()
-				.variable_data,
-			variable_data
-		);
-	});
-}
-
-#[test]
 fn collection_transfer_flag_works() {
 	new_test_ext().execute_with(|| {
 		let origin1 = Origin::signed(1);
@@ -2590,105 +2472,6 @@
 }
 
 #[test]
-fn set_variable_meta_data_on_nft_with_admin_flag() {
-	new_test_ext().execute_with(|| {
-		// default_limits();
-
-		let collection_id =
-			create_test_collection_for_owner(&CollectionMode::NFT, 2, CollectionId(1));
-
-		let origin1 = Origin::signed(1);
-		let origin2 = Origin::signed(2);
-
-		assert_ok!(Unique::set_mint_permission(
-			origin2.clone(),
-			collection_id,
-			true
-		));
-		assert_ok!(Unique::add_to_allow_list(
-			origin2.clone(),
-			collection_id,
-			account(1)
-		));
-
-		assert_ok!(Unique::add_collection_admin(
-			origin2.clone(),
-			collection_id,
-			account(1)
-		));
-
-		let data = default_nft_data();
-		create_test_item(collection_id, &data.into());
-
-		assert_ok!(Unique::set_meta_update_permission_flag(
-			origin2.clone(),
-			collection_id,
-			MetaUpdatePermission::Admin,
-		));
-
-		let variable_data = b"test.".to_vec();
-		assert_ok!(Unique::set_variable_meta_data(
-			origin1,
-			collection_id,
-			TokenId(1),
-			variable_data.clone().try_into().unwrap()
-		));
-
-		assert_eq!(
-			<pallet_nonfungible::TokenData<Test>>::get((collection_id, 1))
-				.unwrap()
-				.variable_data,
-			variable_data
-		);
-	});
-}
-
-#[test]
-fn set_variable_meta_data_on_nft_with_admin_flag_neg() {
-	new_test_ext().execute_with(|| {
-		// default_limits();
-
-		let collection_id =
-			create_test_collection_for_owner(&CollectionMode::NFT, 2, CollectionId(1));
-
-		let origin1 = Origin::signed(1);
-		let origin2 = Origin::signed(2);
-
-		assert_ok!(Unique::set_mint_permission(
-			origin2.clone(),
-			collection_id,
-			true
-		));
-		assert_ok!(Unique::add_to_allow_list(
-			origin2.clone(),
-			collection_id,
-			account(1)
-		));
-
-		let data = default_nft_data();
-		create_test_item(collection_id, &data.into());
-
-		assert_ok!(Unique::set_meta_update_permission_flag(
-			origin2.clone(),
-			collection_id,
-			MetaUpdatePermission::Admin,
-		));
-
-		let variable_data = b"test.".to_vec();
-		assert_noop!(
-			Unique::set_variable_meta_data(
-				origin1,
-				collection_id,
-				TokenId(1),
-				variable_data.try_into().unwrap()
-			)
-			.map_err(|e| e.error),
-			CommonError::<Test>::NoPermission
-		);
-	});
-}
-
-#[test]
 fn set_variable_meta_flag_after_freeze() {
 	new_test_ext().execute_with(|| {
 		// default_limits();
@@ -2710,38 +2493,6 @@
 				MetaUpdatePermission::Admin
 			),
 			CommonError::<Test>::MetadataFlagFrozen
-		);
-	});
-}
-
-#[test]
-fn set_variable_meta_data_on_nft_with_none_flag_neg() {
-	new_test_ext().execute_with(|| {
-		// default_limits();
-
-		let collection_id =
-			create_test_collection_for_owner(&CollectionMode::NFT, 1, CollectionId(1));
-		let origin1 = Origin::signed(1);
-
-		let data = default_nft_data();
-		create_test_item(collection_id, &data.into());
-
-		assert_ok!(Unique::set_meta_update_permission_flag(
-			origin1.clone(),
-			collection_id,
-			MetaUpdatePermission::None,
-		));
-
-		let variable_data = b"test.".to_vec();
-		assert_noop!(
-			Unique::set_variable_meta_data(
-				origin1.clone(),
-				collection_id,
-				TokenId(1),
-				variable_data.try_into().unwrap()
-			)
-			.map_err(|e| e.error),
-			CommonError::<Test>::NoPermission
 		);
 	});
 }

--- a/smart_contracs/transfer/lib.rs
+++ b/smart_contracs/transfer/lib.rs
@@ -58,14 +58,12 @@
 pub enum CreateItemData {
     Nft {
         const_data: Vec<u8>,
-        variable_data: Vec<u8>,
     },
     Fungible {
         value: u128,
     },
     ReFungible {
         const_data: Vec<u8>,
-        variable_data: Vec<u8>,
         pieces: u128,
     },
 }
@@ -88,8 +86,6 @@
     fn approve(spender: DefaultAccountId, collection_id: u32, item_id: u32, amount: u128);
     #[ink(extension = 4, returns_result = false)]
     fn transfer_from(owner: DefaultAccountId, recipient: DefaultAccountId, collection_id: u32, item_id: u32, amount: u128);
-    #[ink(extension = 5, returns_result = false)]
-    fn set_variable_meta_data(collection_id: u32, item_id: u32, data: Vec<u8>);
     #[ink(extension = 6, returns_result = false)]
     fn toggle_allow_list(collection_id: u32, address: DefaultAccountId, allowlisted: bool);
 }
@@ -143,12 +139,6 @@
             let _ = self.env()
                 .extension()
                 .transfer_from(owner, recipient, collection_id, item_id, amount);
-        }
-        #[ink(message)]
-        pub fn set_variable_meta_data(&mut self, collection_id: u32, item_id: u32, data: Vec<u8>) {
-            let _ = self.env()
-                .extension()
-                .set_variable_meta_data(collection_id, item_id, data);
         }
         #[ink(message)]
         pub fn toggle_allow_list(&mut self, collection_id: u32, address: AccountId, allowlisted: bool) {