Please note this is a channel-specific article only applicable to Amazon.


When testing your Amazon channel integration in Settings > Channel Integration > Edit channel details > Test the error message is returned:


This error is returned directly from Amazon when we make API call and it breaks all syncs and actions (including order downloading, stock level updating and listing creation). The error means that Linnworks is not authorised to perform any actions on your Amazon channel anymore. You need to log in to Amazon backend and renew Linnworks application authorization:

  1. Log in to Amazon Seller Central.
  2. Go to Settings > User Permissions.
  3. Click Visit Manage Your Apps button.

  4. Click Renew next to Linnworks. 

The issue should be resolved now, please confirm this by clicking the Test button again and it should have a successful result.

NB! Amazon always sends emails prior to the authorisation expiry with the steps to follow for reauthorization. Please follow the guidance from the email once received to avoid connection issues between Linnworks and Amazon. Application Authorization tokens expire approximately once every 12 months.


If the above fix does not work, please contact Amazon for further assistance.