Authorization failure while using Forma SDK

[bilalSN53S]

When attempting to acquire a token using Forma SDK, I encounter an "invalid_credentials" issue. After configuring Forma.auth with the client ID, callback URL, and scope, calling Forma.auth.acquireTokenOverlay() opens the callback URL in a window. Upon closing this window, an error is displayed stating:

{
    "error": "invalid_credentials",
    "error_description": "The client credentials are invalid."
}

Despite ensuring that the client ID and other parameters are correct (verified through successful calls using the same client ID in Postman), the issue persists.

[martin.nordby.johansen · Accepted solution]

Hi @bilalSN53S,

Thanks for reaching out. Have you made sure that you have created the correct APS application? When acquiring a token in an embedded view the APS app you use needs to be the one called "Desktop, Mobile, Single-Page App"(see image below), which is the only one supporting the OAuth PKCE flow.

When I use a Traditional Web App in my extension I get the same error as you, but it works fine when I use the PKCE app. 

Hopefully that helps, and let me know if you face any more issues!

Martin from Autodesk Forma