GAE: API serving not allowed for this application

Question

I am attempting to follow the tutorial at: http://www.youtube.com/watch?v=v9TG7OzsZqQ

My Cloud Endpoint REST API works well on my local development machine, but when I deploy to App Engine, I receive errors in my Admin Log that "API serving not allowed for this application".

Is this a paid feature that I must enable billing to receive? If not, is there documentation that explains this issue and how to fix this error?

Answer 1

To use Endpoints in production you need to be accepted into the trusted tester program. You can apply here. Mention this Stack Overflow post in your request and I'll see if I can expedite approval.