--- a/pallets/unique/src/lib.rs
+++ b/pallets/unique/src/lib.rs
@@ -238,6 +238,11 @@
 		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)
+		#[deprecated]
+		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>;
@@ -258,6 +263,14 @@
 			0
 		}
 
+		fn on_runtime_upgrade() -> Weight {
+			let limit = None;
+
+			<VariableMetaDataBasket<T>>::remove_all(limit);
+
+			0
+		}
+
 		/// This method creates a Collection of NFTs. Each Token may have multiple properties encoded as an array of bytes of certain length. The initial owner of the collection is set to the address that signed the transaction and can be changed later.
 		///
 		/// # Permissions