Service to service authentication is not allowed using forge Autodesk

In 'Autodesk Construction Cloud APIs' I try to use GET method for projects/{projectId}/issues. This is the documentation for the API: Get issues API Link

I am using Postman and for other API's it works without problems, but for some reason for this API I got the following error:

image of the error:

I know my ProjectId and Token are fine. I am wondering if it has to do with some access the admin must to give me.

best regards,

It looks like your access token is 2-legged. Instead, you will need to use a 3-legged one since its Authentication Context is user context required.

See:

• https://forge.autodesk.com/en/docs/oauth/v2/developers_guide/basics/
• https://forge.autodesk.com/en/docs/oauth/v2/tutorials/get-3-legged-token/
• https://forge.autodesk.com/en/docs/oauth/v2/tutorials/get-3-legged-token-implicit/