3 files changed, 4 insertions, 17 deletions
diff --git a/packages/asset-buyer/CHANGELOG.json b/packages/asset-buyer/CHANGELOG.json
index c572ba4cf..6ba2a0fd9 100644
--- a/packages/asset-buyer/CHANGELOG.json
+++ b/packages/asset-buyer/CHANGELOG.json
@@ -10,6 +10,10 @@
                 "note":
                     "the `OrderProvider` now requires a new method `getAvailableMakerAssetDatasAsync` and the `StandardRelayerAPIOrderProvider` requires the network id at init.",
                 "pr": 1203
+            },
+            {
+                "note": "No longer require that provided orders all have the same maker and taker asset data",
+                "pr": 1197
             }
         ]
     },
diff --git a/packages/asset-buyer/src/asset_buyer.ts b/packages/asset-buyer/src/asset_buyer.ts
index 2bc80ac12..49743404f 100644
--- a/packages/asset-buyer/src/asset_buyer.ts
+++ b/packages/asset-buyer/src/asset_buyer.ts
@@ -56,7 +56,6 @@ export class AssetBuyer {
     ): AssetBuyer {
         assert.isWeb3Provider('provider', provider);
         assert.doesConformToSchema('orders', orders, schemas.signedOrdersSchema);
-        assert.areValidProvidedOrders('orders', orders);
         assert.assert(orders.length !== 0, `Expected orders to contain at least one order`);
         const orderProvider = new BasicOrderProvider(orders);
         const assetBuyer = new AssetBuyer(provider, orderProvider, options);
diff --git a/packages/asset-buyer/src/utils/assert.ts b/packages/asset-buyer/src/utils/assert.ts
index e5bfd2d81..2466f53a4 100644
--- a/packages/asset-buyer/src/utils/assert.ts
+++ b/packages/asset-buyer/src/utils/assert.ts
@@ -1,6 +1,5 @@
 import { assert as sharedAssert } from '@0x/assert';
 import { schemas } from '@0x/json-schemas';
-import { SignedOrder } from '@0x/types';
 import * as _ from 'lodash';
 
 import { BuyQuote, BuyQuoteInfo, OrderProvider, OrderProviderRequest } from '../types';
@@ -30,21 +29,6 @@ export const assert = {
         sharedAssert.isHexString(`${variableName}.makerAssetData`, orderFetcherRequest.makerAssetData);
         sharedAssert.isHexString(`${variableName}.takerAssetData`, orderFetcherRequest.takerAssetData);
     },
-    areValidProvidedOrders(variableName: string, orders: SignedOrder[]): void {
-        if (orders.length === 0) {
-            return;
-        }
-        const makerAssetData = orders[0].makerAssetData;
-        const takerAssetData = orders[0].takerAssetData;
-        const filteredOrders = _.filter(
-            orders,
-            order => order.makerAssetData === makerAssetData && order.takerAssetData === takerAssetData,
-        );
-        sharedAssert.assert(
-            orders.length === filteredOrders.length,
-            `Expected all orders in ${variableName} to have the same makerAssetData and takerAssetData.`,
-        );
-    },
     isValidPercentage(variableName: string, percentage: number): void {
         assert.isNumber(variableName, percentage);
         assert.assert(