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amazon-web-servicespostmanamazon-selling-partner-api

How to resolve "Access to requested resource is denied"?

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

{
    "errors": [
        {
            "message": "Access to requested resource is denied.",
            "code": "Unauthorized",
            "details": ""
        }
    ]
}

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.

Solution

  • Please check that the roles of the user you are using allow to make request to that endpoint in your dev profile at https://sellercentral.amazon.com/

    As far as I know, the getMarketplaceParticipations doesn't need a Restricted Data Token (RDT). So you must be able to solve it by giving the user the correct roles.

    I was able to get them using Postman. It is a good way to check that the request is correctly built and not a programming issue. enter image description here