SP API: Access to requested resource is denied (Postman)

[levin2336]

Hi,

I'm working on connecting to the SP API (via Postman) and to do so I followed this tutorial. I did the Assume Role call, aqquired my AWS access token and then tried to request a simple question from the API.

First I got this error:

"code": "Unauthorized",
"message": "Access to requested resource is denied.",
"details": "Access token is missing in the request header."

so I added my LWA Access token as x-amz-access-token to the Headers. But now I get this error:

"code": "Unauthorized",
"message": "Access to requested resource is denied.",
"details": "The access token you provided is revoked, malformed or invalid."

This is the request:

{{SPAPI Endpoint}}: https://sellingpartnerapi-eu.amazon.com

{{Assumed Role AWS Client ID}}: ASIA5...
{{Assumed Role AWS Client Secret}}: ud1...
{{AWS Region}}: eu-west-1
{{Assumed Role AWS Session Token}}: IQoJ...

{{LWA Access Token}}: Atza|IwEBI...

I double checked everything but can't seem to find the problem :/

Do you have an idea what I've done wrong / what I can do to fix this?

Many thanks in advance!

[levin2336]

Just for reference: The problem was that my sp App was still in sandbox and not in production mode. I fixed it by changing the SPAPI Endpoint from https://sellingpartnerapi-eu.amazon.com to https://sandbox.sellingpartnerapi-eu.amazon.com (or switching to production mode) :)

[jawheral]

Hi @levin2336,

The tutorial mentioned is outdated. You don't need AWS credentials or roles to connect to SP-API anymore. Please follow our official documentation via this link.

Best,
Jawher
Selling Partner Developer Services