Fix access to the requested resource is denied

Job ID: 35368451

Budget: $25 – $50 USD

I am getting the following when sending a marketplaceParticipations request to sellers/v1/marketplaceParticipations via Postman after following instructions and examples provided at https://developer-docs.amazon.com/sp-api/docs/connecting-to-the-selling-partner-api

We have registered a self-authorized app client in Draft status which has a user ARN IAM attached as described at https://developer-docs.amazon.com/sp-api/docs/registering-your-application.Ï

I've checked the inline and role policies for the ARN IAM. They are exactly as described at https://developer-docs.amazon.com/sp-api/docs/creating-and-configuring-iam-policies-and-entities#step-4-create-an-iam-role.

We are able to successfully request an LWA access token following the docs at https://developer-docs.amazon.com/sp-api/docs/connecting-to-the-selling-partner-api#step-1-request-a-login-with-amazon-access-token.
Related categories: Amazon Web Services API Integration