Access to platform services is managed by the platform in Keycloak. This works out of the box, so that all Designer services you develop can access all (public) platform services. The platform handles the roles and automatically and passes the necessary permissions. However, some requirements make it necessary to develop a custom Node.js service that runs on the PAS platform. To be able to access such a service, you need to configure access to this dedicated service in Keycloak by yourself.