SP-API: 'Access to requested resource is denied'

Question

Hello,  
  
I'm having some trouble getting my first SP-API request to work. I have followed all the instructions on the Selling Partner API Developer Guide (https://github.com/amzn/selling-partner-api-docs/blob/main/guides/en-US/developer-guide/SellingPartnerApiDeveloperGuide.md).  
  
My requests appear to authenticate correctly so I believe the signature etc is valid. However I'm receiving the following response:  
  
{  
  errors: \[  
    {  
      message: 'Access to requested resource is denied.',  
      code: 'Unauthorized',  
      details: ''  
    }  
  ]  
}  
  
I believe this is something to do with the IAM configuration. I have a user with a "SellingPartnerAPIPolicy" permissions policy attached. I also have a "SellingPartnerAPIRole" Role defined to which the "SellingPartnerAPIPolicy" permissions policy is also attached. I am using the user credentials in my request.  
  
Can anybody point me in the right direction to resolve this?  
  
Many thanks,  
Meriadoc.

Answer

I think this is because you are not authorize your application. Go to your amazon seller center and authorize your application.

Answer

Doesn't anyone have any idea...?

Answer

I have the same problem - i've authorized my app but cant seem to get beyond the authenticating stage either. anyone else have any ideas?

SP-API: 'Access to requested resource is denied'

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