diff --git a/src/spot-client-v3.ts b/src/spot-client-v3.ts
index 33719a9..7624204 100644
--- a/src/spot-client-v3.ts
+++ b/src/spot-client-v3.ts
@@ -11,6 +11,7 @@ import {
   SpotLeveragedTokenPRHistoryRequest,
   SpotCrossMarginBorrowingInfoRequest,
   SpotCrossMarginRepaymentHistoryRequest,
+  SpotCancelOrderBatchRequest,
 } from './types';
 import { REST_CLIENT_TYPE_ENUM } from './util';
 import BaseRestClient from './util/BaseRestClient';
@@ -119,11 +120,9 @@ export class SpotClientV3 extends BaseRestClient {
   }
 
   /** Batch cancel orders */
-  cancelOrderBatch(params: {
-    symbol: string;
-    side?: OrderSide;
-    orderTypes: OrderTypeSpot[];
-  }): Promise<APIResponseV3<any>> {
+  cancelOrderBatch(
+    params: SpotCancelOrderBatchRequest
+  ): Promise<APIResponseV3<any>> {
     const orderTypes = params.orderTypes
       ? params.orderTypes.join(',')
       : undefined;
diff --git a/src/types/request/spot.ts b/src/types/request/spot.ts
index fc589ea..3c0c20f 100644
--- a/src/types/request/spot.ts
+++ b/src/types/request/spot.ts
@@ -25,6 +25,12 @@ export interface NewSpotOrderV3 {
   triggerPrice?: string;
 }
 
+export interface SpotCancelOrderBatchRequest {
+  symbol: string;
+  side?: OrderSide;
+  orderTypes: OrderTypeSpot[];
+}
+
 export interface SpotOrderQueryById {
   orderId?: string;
   orderLinkId?: string;
diff --git a/src/util/BaseRestClient.ts b/src/util/BaseRestClient.ts
index b5a7a13..9141dab 100644
--- a/src/util/BaseRestClient.ts
+++ b/src/util/BaseRestClient.ts
@@ -6,7 +6,7 @@ import {
   serializeParams,
   RestClientType,
   REST_CLIENT_TYPE_ENUM,
-  agentSource,
+  APIID,
   getRestBaseUrl,
 } from './requestUtils';
 
@@ -98,7 +98,7 @@ export default abstract class BaseRestClient {
       // custom request options based on axios specs - see: https://github.com/axios/axios#request-config
       ...requestOptions,
       headers: {
-        'x-referer': agentSource,
+        'x-referer': APIID,
       },
     };
 
diff --git a/src/util/requestUtils.ts b/src/util/requestUtils.ts
index fa52e5b..fde95a0 100644
--- a/src/util/requestUtils.ts
+++ b/src/util/requestUtils.ts
@@ -85,7 +85,7 @@ export function isWsPong(msg: any): boolean {
   );
 }
 
-export const agentSource = 'bybitapinode';
+export const APIID = 'bybitapinode';
 
 /**
  * Used to switch how authentication/requests work under the hood (primarily for SPOT since it's different there)