As per the SP documentation, I can use the GET /authorization/v1/authorizationCode endpoint to call a Selling Partner API on behalf of a seller who has already authorized me to call Amazon Marketplace Web Service (Amazon MWS). Which is the case I am working on.
I am sending a GET request to
But I am faced with this 403 response
“message”: “Access to requested resource is denied.”,
I’ve verified that the query parameter am sending for the mwsAuthToken and the Ids are correct
I’ve also gone through the instructions for registering a selling partner api application (By creating IAM User/ Roles/ Policies/ etc) and added the Role ARN to my application in the seller central account.
Thank you in advance for your help.