No, it’s a new 300 service. I wonder how you are getting it.?. And yes, ticket please!!!
I don’t think I am. I think the API Service throws that error as a generic instead of a 404 when you try access a service that isn’t there.
No need for a ticket, just interesting response from the server is all.
In checking api/Help it’s not listed as a service either, so that’s the likely case.