--- a/js-packages/playgrounds/unique.xcm.ts
+++ b/js-packages/playgrounds/unique.xcm.ts
@@ -104,17 +104,17 @@
 }
 
 export class ForeignAssetsGroup extends HelperGroup<UniqueHelper> {
-  async register(signer: TSigner, location: any, name: string, tokenPrefix: string, mode: 'NFT' | { Fungible: number }) {
+  async register(signer: TSigner, assetId: any, name: string, tokenPrefix: string, mode: 'NFT' | { Fungible: number }) {
     await this.helper.executeExtrinsic(
       signer,
       'api.tx.foreignAssets.forceRegisterForeignAsset',
-      [location, this.helper.util.str2vec(name), tokenPrefix, mode],
+      [assetId, this.helper.util.str2vec(name), tokenPrefix, mode],
       true,
     );
   }
 
-  async foreignCollectionId(location: any) {
-    return (await this.helper.callRpc('api.query.foreignAssets.foreignReserveLocationToCollection', [location])).toJSON();
+  async foreignCollectionId(assetId: any) {
+    return (await this.helper.callRpc('api.query.foreignAssets.foreignAssetToCollection', [assetId])).toJSON();
   }
 }
 
--- a/js-packages/tests/xcm/xcm.types.ts
+++ b/js-packages/tests/xcm/xcm.types.ts
@@ -512,15 +512,16 @@
         parents: 1,
         interior: 'Here',
       };
+      const relayAssetId = {Concrete: relayLocation};
 
-      const relayCollectionId = await helper.foreignAssets.foreignCollectionId(relayLocation);
+      const relayCollectionId = await helper.foreignAssets.foreignCollectionId(relayAssetId);
       if(relayCollectionId == null) {
         const name = 'Relay Tokens';
         const tokenPrefix = 'xDOT';
         const decimals = 10;
-        await helper.getSudo().foreignAssets.register(alice, relayLocation, name, tokenPrefix, {Fungible: decimals});
+        await helper.getSudo().foreignAssets.register(alice, relayAssetId, name, tokenPrefix, {Fungible: decimals});
 
-        return await helper.foreignAssets.foreignCollectionId(relayLocation);
+        return await helper.foreignAssets.foreignCollectionId(relayAssetId);
       } else {
         console.log('Relay foreign collection is already registered');
         return relayCollectionId;
--- a/js-packages/tests/xcm/xcmOpal.test.ts
+++ b/js-packages/tests/xcm/xcmOpal.test.ts
@@ -17,7 +17,7 @@
 import type {IKeyringPair} from '@polkadot/types/types';
 import config from '../config.js';
 import {itSub, expect, describeXCM, usingPlaygrounds, usingWestmintPlaygrounds, usingRelayPlaygrounds} from '../util/index.js';
-import {XcmTestHelper} from './xcm.types';
+import {XcmTestHelper} from './xcm.types.js';
 
 const STATEMINE_CHAIN = +(process.env.RELAY_WESTMINT_ID || 1000);
 const UNIQUE_CHAIN = +(process.env.RELAY_OPAL_ID || 2095);
@@ -120,16 +120,23 @@
           },
         ]},
       };
+      const assetId = {Concrete: location};
 
-      if(await helper.foreignAssets.foreignCollectionId(location) == null) {
+      if(await helper.foreignAssets.foreignCollectionId(assetId) == null) {
         const tokenPrefix = USDT_ASSET_METADATA_NAME;
-        await helper.getSudo().foreignAssets.register(alice, location, USDT_ASSET_METADATA_NAME, tokenPrefix, {Fungible: USDT_ASSET_METADATA_DECIMALS});
+        await helper.getSudo().foreignAssets.register(
+          alice,
+          assetId,
+          USDT_ASSET_METADATA_NAME,
+          tokenPrefix,
+          {Fungible: USDT_ASSET_METADATA_DECIMALS},
+        );
       } else {
         console.log('Foreign collection is already registered on Opal');
       }
 
       balanceOpalBefore = await helper.balance.getSubstrate(alice.address);
-      usdtCollectionId = await helper.foreignAssets.foreignCollectionId(location);
+      usdtCollectionId = await helper.foreignAssets.foreignCollectionId(assetId);
     });
 
     // Providing the relay currency to the unique sender account
--- a/js-packages/tests/xcm/xcmQuartz.test.ts
+++ b/js-packages/tests/xcm/xcmQuartz.test.ts
@@ -19,7 +19,7 @@
 import {DevUniqueHelper, Event} from '@unique/playgrounds/unique.dev.js';
 import {STATEMINE_CHAIN, QUARTZ_CHAIN, KARURA_CHAIN, MOONRIVER_CHAIN, SHIDEN_CHAIN, STATEMINE_DECIMALS, KARURA_DECIMALS, QTZ_DECIMALS, RELAY_DECIMALS, SHIDEN_DECIMALS, karuraUrl, moonriverUrl, relayUrl, shidenUrl, statemineUrl} from './xcm.types.js';
 import {hexToString} from '@polkadot/util';
-import {XcmTestHelper} from './xcm.types';
+import {XcmTestHelper} from './xcm.types.js';
 
 const STATEMINE_PALLET_INSTANCE = 50;
 
@@ -130,16 +130,17 @@
           },
         ]},
       };
+      const assetId = {Concrete: location};
 
-      if(await helper.foreignAssets.foreignCollectionId(location) == null) {
+      if(await helper.foreignAssets.foreignCollectionId(assetId) == null) {
         const tokenPrefix = USDT_ASSET_METADATA_NAME;
-        await helper.getSudo().foreignAssets.register(alice, location, USDT_ASSET_METADATA_NAME, tokenPrefix, {Fungible: USDT_ASSET_METADATA_DECIMALS});
+        await helper.getSudo().foreignAssets.register(alice, assetId, USDT_ASSET_METADATA_NAME, tokenPrefix, {Fungible: USDT_ASSET_METADATA_DECIMALS});
       } else {
         console.log('Foreign collection is already registered on Quartz');
       }
 
       balanceQuartzBefore = await helper.balance.getSubstrate(alice.address);
-      usdtCollectionId = await helper.foreignAssets.foreignCollectionId(location);
+      usdtCollectionId = await helper.foreignAssets.foreignCollectionId(assetId);
     });
 
 
--- a/js-packages/tests/xcm/xcmUnique.test.ts
+++ b/js-packages/tests/xcm/xcmUnique.test.ts
@@ -20,7 +20,7 @@
 import {Event} from '@unique/playgrounds/unique.dev.js';
 import {hexToString, nToBigInt} from '@polkadot/util';
 import {ACALA_CHAIN, ASTAR_CHAIN, MOONBEAM_CHAIN, POLKADEX_CHAIN, SAFE_XCM_VERSION, STATEMINT_CHAIN, UNIQUE_CHAIN, expectFailedToTransact, expectUntrustedReserveLocationFail, uniqueAssetId, uniqueVersionedMultilocation} from './xcm.types.js';
-import {XcmTestHelper} from './xcm.types';
+import {XcmTestHelper} from './xcm.types.js';
 
 const STATEMINT_PALLET_INSTANCE = 50;
 
@@ -142,16 +142,17 @@
           },
         ]},
       };
+      const assetId = {Concrete: location};
 
-      if(await helper.foreignAssets.foreignCollectionId(location) == null) {
+      if(await helper.foreignAssets.foreignCollectionId(assetId) == null) {
         const tokenPrefix = USDT_ASSET_METADATA_NAME;
-        await helper.getSudo().foreignAssets.register(alice, location, USDT_ASSET_METADATA_NAME, tokenPrefix, {Fungible: USDT_ASSET_METADATA_DECIMALS});
+        await helper.getSudo().foreignAssets.register(alice, assetId, USDT_ASSET_METADATA_NAME, tokenPrefix, {Fungible: USDT_ASSET_METADATA_DECIMALS});
       } else {
         console.log('Foreign collection is already registered on Unique');
       }
 
       balanceUniqueBefore = await helper.balance.getSubstrate(alice.address);
-      usdtCollectionId = await helper.foreignAssets.foreignCollectionId(location);
+      usdtCollectionId = await helper.foreignAssets.foreignCollectionId(assetId);
     });