I'm trying to load client associated projects via REST API, but I'm getting "Invalid OAuth scope" error when running GET call: /restapi/portal/[PORTALID]/clients/[CLIENT USER ID]/projects

Documentation: https://www.zoho.com/projects/help/rest-api/users-api.html#alink16

According to documentation, I should have at least ZohoProjects.clients.READ scope. That scope is present, I can execute  /restapi/portal/[PORTALID]/clients/ call whithout any issues.