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After setting up Amazon integration you receive an error message

System.Exception: Server was unable to process request. ---> RequestInventoryReport: Operation failed - Access to the resource Unauthorized in Production: (XXXXXXXXXXXXXXXXX;XXXXXXXXXXX) is denied.


This is due to invalid Merchant Id and MarketPlace id for the seller.


  1. Open your browser
  2. Go to Amazon Seller central and Sign Out
  3. In Linnworks Go to Settings > Channels > select Amazon Config
  4. Click Test
  5. It will prompt with an error and ask you to proceed to autorization page on Amazon
  6. Sign in to Amazon in the webbrowser
  7. Enter the Application Name and (our) Developer Id
  8. Get your Merchant Id and MarketPlace Id and paste it into Config window