diff --git a/src/v0/destinations/marketo_bulk_upload/util.js b/src/v0/destinations/marketo_bulk_upload/util.js
index c4d7ce22fa..b3714e982d 100644
--- a/src/v0/destinations/marketo_bulk_upload/util.js
+++ b/src/v0/destinations/marketo_bulk_upload/util.js
@@ -36,11 +36,6 @@ const hydrateStatusForServer = (statusCode, context) => {
   return status;
 };
 
-// const getAccessTokenCacheKey = (config = {}) => {
-//   const { munchkinId, clientId, clientSecret } = config;
-//   return `${munchkinId}-${clientId}-${clientSecret}`;
-// };
-
 /**
  * Handles common error responses returned from API calls.
  * Checks the error code and throws the appropriate error object based on the code.
@@ -74,7 +69,6 @@ const handleCommonErrorResponse = (apiCallResult, OpErrorMessage, OpActivity) =>
   // checking for invalid/expired token errors and evicting cache in that case
   // rudderJobMetadata contains some destination info which is being used to evict the cache
   if (
-    //  authCache &&
     apiCallResult.response?.errors &&
     apiCallResult.response?.errors?.length > 0 &&
     apiCallResult.response?.errors.some(
diff --git a/src/v0/destinations/marketo_bulk_upload/util.test.js b/src/v0/destinations/marketo_bulk_upload/util.test.js
new file mode 100644
index 0000000000..dba1dfdd38
--- /dev/null
+++ b/src/v0/destinations/marketo_bulk_upload/util.test.js
@@ -0,0 +1,64 @@
+const util = require('./util.js');
+const axios = require('axios');
+const networkAdapter = require('../../../adapters/network');
+const { handleHttpRequest } = networkAdapter;
+
+// Mock the handleHttpRequest function
+jest.mock('../../../adapters/network');
+
+const successfulResponse = {
+  status: 200,
+  response: {
+    access_token: '<dummy-access-token>',
+    token_type: 'bearer',
+    expires_in: 3600,
+    scope: 'dummy@scope.com',
+    success: true,
+  },
+};
+
+const unsuccessfulResponse = {
+  status: 400,
+  response: '[ENOTFOUND] :: DNS lookup failed',
+};
+
+const emptyResponse = {
+  response: '',
+};
+
+const invalidClientErrorResponse = {
+  status: 401,
+  response: {
+    error: 'invalid_client',
+    error_description: 'Bad client credentials',
+  },
+};
+describe('util.getAccessToken', () => {
+  beforeEach(() => {
+    handleHttpRequest.mockClear();
+  });
+
+  it('should retrieve and return access token on successful response', async () => {
+    const url =
+      'https://dummyMunchkinId.mktorest.com/identity/oauth/token?client_id=dummyClientId&client_secret=dummyClientSecret&grant_type=client_credentials';
+
+    handleHttpRequest.mockResolvedValueOnce({
+      processedResponse: successfulResponse,
+    });
+
+    const config = {
+      clientId: 'dummyClientId',
+      clientSecret: 'dummyClientSecret',
+      munchkinId: 'dummyMunchkinId',
+    };
+
+    const result = await util.getAccessToken(config);
+    expect(result).toBe('<dummy-access-token>');
+    expect(handleHttpRequest).toHaveBeenCalledTimes(1);
+    // Ensure your mock response structure is consistent with the actual behavior
+    expect(handleHttpRequest).toHaveBeenCalledWith('get', url, {
+      destType: 'marketo_bulk_upload',
+      feature: 'transformation',
+    });
+  });
+});