--- a/pallets/refungible/src/stubs/UniqueRefungibleToken.sol
+++ b/pallets/refungible/src/stubs/UniqueRefungibleToken.sol
@@ -43,149 +43,6 @@
 	}
 }
 
-// Selector: 7d9262e6
-contract Collection is Dummy, ERC165 {
-	// Selector: setCollectionProperty(string,bytes) 2f073f66
-	function setCollectionProperty(string memory key, bytes memory value)
-		public
-	{
-		require(false, stub_error);
-		key;
-		value;
-		dummy = 0;
-	}
-
-	// Selector: deleteCollectionProperty(string) 7b7debce
-	function deleteCollectionProperty(string memory key) public {
-		require(false, stub_error);
-		key;
-		dummy = 0;
-	}
-
-	// Throws error if key not found
-	//
-	// Selector: collectionProperty(string) cf24fd6d
-	function collectionProperty(string memory key)
-		public
-		view
-		returns (bytes memory)
-	{
-		require(false, stub_error);
-		key;
-		dummy;
-		return hex"";
-	}
-
-	// Selector: setCollectionSponsor(address) 7623402e
-	function setCollectionSponsor(address sponsor) public {
-		require(false, stub_error);
-		sponsor;
-		dummy = 0;
-	}
-
-	// Selector: confirmCollectionSponsorship() 3c50e97a
-	function confirmCollectionSponsorship() public {
-		require(false, stub_error);
-		dummy = 0;
-	}
-
-	// Selector: setCollectionLimit(string,uint32) 6a3841db
-	function setCollectionLimit(string memory limit, uint32 value) public {
-		require(false, stub_error);
-		limit;
-		value;
-		dummy = 0;
-	}
-
-	// Selector: setCollectionLimit(string,bool) 993b7fba
-	function setCollectionLimit(string memory limit, bool value) public {
-		require(false, stub_error);
-		limit;
-		value;
-		dummy = 0;
-	}
-
-	// Selector: contractAddress() f6b4dfb4
-	function contractAddress() public view returns (address) {
-		require(false, stub_error);
-		dummy;
-		return 0x0000000000000000000000000000000000000000;
-	}
-
-	// Selector: addCollectionAdminSubstrate(uint256) 5730062b
-	function addCollectionAdminSubstrate(uint256 newAdmin) public view {
-		require(false, stub_error);
-		newAdmin;
-		dummy;
-	}
-
-	// Selector: removeCollectionAdminSubstrate(uint256) 4048fcf9
-	function removeCollectionAdminSubstrate(uint256 newAdmin) public view {
-		require(false, stub_error);
-		newAdmin;
-		dummy;
-	}
-
-	// Selector: addCollectionAdmin(address) 92e462c7
-	function addCollectionAdmin(address newAdmin) public view {
-		require(false, stub_error);
-		newAdmin;
-		dummy;
-	}
-
-	// Selector: removeCollectionAdmin(address) fafd7b42
-	function removeCollectionAdmin(address admin) public view {
-		require(false, stub_error);
-		admin;
-		dummy;
-	}
-
-	// Selector: setCollectionNesting(bool) 112d4586
-	function setCollectionNesting(bool enable) public {
-		require(false, stub_error);
-		enable;
-		dummy = 0;
-	}
-
-	// Selector: setCollectionNesting(bool,address[]) 64872396
-	function setCollectionNesting(bool enable, address[] memory collections)
-		public
-	{
-		require(false, stub_error);
-		enable;
-		collections;
-		dummy = 0;
-	}
-
-	// Selector: setCollectionAccess(uint8) 41835d4c
-	function setCollectionAccess(uint8 mode) public {
-		require(false, stub_error);
-		mode;
-		dummy = 0;
-	}
-
-	// Selector: addToCollectionAllowList(address) 67844fe6
-	function addToCollectionAllowList(address user) public view {
-		require(false, stub_error);
-		user;
-		dummy;
-	}
-
-	// Selector: removeFromCollectionAllowList(address) 85c51acb
-	function removeFromCollectionAllowList(address user) public view {
-		require(false, stub_error);
-		user;
-		dummy;
-	}
-
-	// Selector: setCollectionMintMode(bool) 00018e84
-	function setCollectionMintMode(bool mode) public {
-		require(false, stub_error);
-		mode;
-		dummy = 0;
-	}
-}
-
 // Selector: 942e8b22
 contract ERC20 is Dummy, ERC165, ERC20Events {
 	// Selector: name() 06fdde03
@@ -270,12 +127,4 @@
 	}
 }
 
-contract UniqueRFT is Dummy, ERC165, Collection {}
-
-contract UniqueRefungibleToken is
-	Dummy,
-	ERC165,
-	ERC20,
-	ERC20UniqueExtensions,
-	UniqueRFT
-{}
+contract UniqueRefungibleToken is Dummy, ERC165, ERC20, ERC20UniqueExtensions {}
--- a/tests/src/eth/api/UniqueRefungibleToken.sol
+++ b/tests/src/eth/api/UniqueRefungibleToken.sol
@@ -28,70 +28,6 @@
 	function burnFrom(address from, uint256 amount) external returns (bool);
 }
 
-// Selector: 7d9262e6
-interface Collection is Dummy, ERC165 {
-	// Selector: setCollectionProperty(string,bytes) 2f073f66
-	function setCollectionProperty(string memory key, bytes memory value)
-		external;
-
-	// Selector: deleteCollectionProperty(string) 7b7debce
-	function deleteCollectionProperty(string memory key) external;
-
-	// Throws error if key not found
-	//
-	// Selector: collectionProperty(string) cf24fd6d
-	function collectionProperty(string memory key)
-		external
-		view
-		returns (bytes memory);
-
-	// Selector: setCollectionSponsor(address) 7623402e
-	function setCollectionSponsor(address sponsor) external;
-
-	// Selector: confirmCollectionSponsorship() 3c50e97a
-	function confirmCollectionSponsorship() external;
-
-	// Selector: setCollectionLimit(string,uint32) 6a3841db
-	function setCollectionLimit(string memory limit, uint32 value) external;
-
-	// Selector: setCollectionLimit(string,bool) 993b7fba
-	function setCollectionLimit(string memory limit, bool value) external;
-
-	// Selector: contractAddress() f6b4dfb4
-	function contractAddress() external view returns (address);
-
-	// Selector: addCollectionAdminSubstrate(uint256) 5730062b
-	function addCollectionAdminSubstrate(uint256 newAdmin) external view;
-
-	// Selector: removeCollectionAdminSubstrate(uint256) 4048fcf9
-	function removeCollectionAdminSubstrate(uint256 newAdmin) external view;
-
-	// Selector: addCollectionAdmin(address) 92e462c7
-	function addCollectionAdmin(address newAdmin) external view;
-
-	// Selector: removeCollectionAdmin(address) fafd7b42
-	function removeCollectionAdmin(address admin) external view;
-
-	// Selector: setCollectionNesting(bool) 112d4586
-	function setCollectionNesting(bool enable) external;
-
-	// Selector: setCollectionNesting(bool,address[]) 64872396
-	function setCollectionNesting(bool enable, address[] memory collections)
-		external;
-
-	// Selector: setCollectionAccess(uint8) 41835d4c
-	function setCollectionAccess(uint8 mode) external;
-
-	// Selector: addToCollectionAllowList(address) 67844fe6
-	function addToCollectionAllowList(address user) external view;
-
-	// Selector: removeFromCollectionAllowList(address) 85c51acb
-	function removeFromCollectionAllowList(address user) external view;
-
-	// Selector: setCollectionMintMode(bool) 00018e84
-	function setCollectionMintMode(bool mode) external;
-}
-
 // Selector: 942e8b22
 interface ERC20 is Dummy, ERC165, ERC20Events {
 	// Selector: name() 06fdde03
@@ -128,13 +64,10 @@
 		view
 		returns (uint256);
 }
-
-interface UniqueRFT is Dummy, ERC165, Collection {}
 
 interface UniqueRefungibleToken is
 	Dummy,
 	ERC165,
 	ERC20,
-	ERC20UniqueExtensions,
-	UniqueRFT
+	ERC20UniqueExtensions
 {}
--- a/tests/src/eth/reFungibleTokenAbi.json
+++ b/tests/src/eth/reFungibleTokenAbi.json
@@ -51,33 +51,6 @@
   },
   {
     "inputs": [
-      { "internalType": "address", "name": "newAdmin", "type": "address" }
-    ],
-    "name": "addCollectionAdmin",
-    "outputs": [],
-    "stateMutability": "view",
-    "type": "function"
-  },
-  {
-    "inputs": [
-      { "internalType": "uint256", "name": "newAdmin", "type": "uint256" }
-    ],
-    "name": "addCollectionAdminSubstrate",
-    "outputs": [],
-    "stateMutability": "view",
-    "type": "function"
-  },
-  {
-    "inputs": [
-      { "internalType": "address", "name": "user", "type": "address" }
-    ],
-    "name": "addToCollectionAllowList",
-    "outputs": [],
-    "stateMutability": "view",
-    "type": "function"
-  },
-  {
-    "inputs": [
       { "internalType": "address", "name": "owner", "type": "address" },
       { "internalType": "address", "name": "spender", "type": "address" }
     ],
@@ -112,28 +85,7 @@
     ],
     "name": "burnFrom",
     "outputs": [{ "internalType": "bool", "name": "", "type": "bool" }],
-    "stateMutability": "nonpayable",
-    "type": "function"
-  },
-  {
-    "inputs": [{ "internalType": "string", "name": "key", "type": "string" }],
-    "name": "collectionProperty",
-    "outputs": [{ "internalType": "bytes", "name": "", "type": "bytes" }],
-    "stateMutability": "view",
-    "type": "function"
-  },
-  {
-    "inputs": [],
-    "name": "confirmCollectionSponsorship",
-    "outputs": [],
     "stateMutability": "nonpayable",
-    "type": "function"
-  },
-  {
-    "inputs": [],
-    "name": "contractAddress",
-    "outputs": [{ "internalType": "address", "name": "", "type": "address" }],
-    "stateMutability": "view",
     "type": "function"
   },
   {
@@ -141,121 +93,13 @@
     "name": "decimals",
     "outputs": [{ "internalType": "uint8", "name": "", "type": "uint8" }],
     "stateMutability": "view",
-    "type": "function"
-  },
-  {
-    "inputs": [{ "internalType": "string", "name": "key", "type": "string" }],
-    "name": "deleteCollectionProperty",
-    "outputs": [],
-    "stateMutability": "nonpayable",
     "type": "function"
   },
   {
     "inputs": [],
     "name": "name",
     "outputs": [{ "internalType": "string", "name": "", "type": "string" }],
-    "stateMutability": "view",
-    "type": "function"
-  },
-  {
-    "inputs": [
-      { "internalType": "address", "name": "admin", "type": "address" }
-    ],
-    "name": "removeCollectionAdmin",
-    "outputs": [],
-    "stateMutability": "view",
-    "type": "function"
-  },
-  {
-    "inputs": [
-      { "internalType": "uint256", "name": "newAdmin", "type": "uint256" }
-    ],
-    "name": "removeCollectionAdminSubstrate",
-    "outputs": [],
-    "stateMutability": "view",
-    "type": "function"
-  },
-  {
-    "inputs": [
-      { "internalType": "address", "name": "user", "type": "address" }
-    ],
-    "name": "removeFromCollectionAllowList",
-    "outputs": [],
     "stateMutability": "view",
-    "type": "function"
-  },
-  {
-    "inputs": [{ "internalType": "uint8", "name": "mode", "type": "uint8" }],
-    "name": "setCollectionAccess",
-    "outputs": [],
-    "stateMutability": "nonpayable",
-    "type": "function"
-  },
-  {
-    "inputs": [
-      { "internalType": "string", "name": "limit", "type": "string" },
-      { "internalType": "uint32", "name": "value", "type": "uint32" }
-    ],
-    "name": "setCollectionLimit",
-    "outputs": [],
-    "stateMutability": "nonpayable",
-    "type": "function"
-  },
-  {
-    "inputs": [
-      { "internalType": "string", "name": "limit", "type": "string" },
-      { "internalType": "bool", "name": "value", "type": "bool" }
-    ],
-    "name": "setCollectionLimit",
-    "outputs": [],
-    "stateMutability": "nonpayable",
-    "type": "function"
-  },
-  {
-    "inputs": [{ "internalType": "bool", "name": "mode", "type": "bool" }],
-    "name": "setCollectionMintMode",
-    "outputs": [],
-    "stateMutability": "nonpayable",
-    "type": "function"
-  },
-  {
-    "inputs": [{ "internalType": "bool", "name": "enable", "type": "bool" }],
-    "name": "setCollectionNesting",
-    "outputs": [],
-    "stateMutability": "nonpayable",
-    "type": "function"
-  },
-  {
-    "inputs": [
-      { "internalType": "bool", "name": "enable", "type": "bool" },
-      {
-        "internalType": "address[]",
-        "name": "collections",
-        "type": "address[]"
-      }
-    ],
-    "name": "setCollectionNesting",
-    "outputs": [],
-    "stateMutability": "nonpayable",
-    "type": "function"
-  },
-  {
-    "inputs": [
-      { "internalType": "string", "name": "key", "type": "string" },
-      { "internalType": "bytes", "name": "value", "type": "bytes" }
-    ],
-    "name": "setCollectionProperty",
-    "outputs": [],
-    "stateMutability": "nonpayable",
-    "type": "function"
-  },
-  {
-    "inputs": [
-      { "internalType": "address", "name": "sponsor", "type": "address" }
-    ],
-    "name": "setCollectionSponsor",
-    "outputs": [],
-    "stateMutability": "nonpayable",
     "type": "function"
   },
   {