Hi,
I'm starting to explore the Vissmann API.
When following the docs: https://api.viessmann-climatesolutions.com/documentation/static/authentication
In step one there is no other redirect URL accepted that http://localhost:4200 as described in the example.
When I change the port to 4201 i get {"error":"invalid_request", "error_description":"Invalid redirection URI."}
Why does the API behave like that?