Client stucks with requesting a token for sub-sequent requests via POST /token from our API.
Can you give me some hint what might be our client_id and whether this really is the issue I am facing? The highlighted (yellow) parts are related to where I believe the issue is located, but still maybe I'm wrong.
The client_id is a unique ID used by the platform to identify a specific application. The client should refer to the Quick Start guide which describes what this ID is and how to obtain it.
They can refer to the following section within the Quick start and click on the associated link to create the ID:
Please note that you can create the Client ID (aka App Key) via the following ways: