[google-appengine] Re: App Engine site returning 503 Over Quota when I am under quota and have billing enabled

Creative Cubs' answer will most likely fix your issue. If after adding a daily budget of at least one penny you are still hitting that error you might be hitting a safety limit . Make sure you are not doing any b

[google-appengine] Re: App Engine site returning 503 Over Quota when I am under quota and have billing enabled

Enabling billing is not sufficient. You need to set app engine daily quotas, for app engine to provision new instances beyond free tier. See http://stackoverflow.com/questions/31017902/google-app-engine-quote-is-expired-how-to-provision-new-instances-on-emergency On Monday, September 9, 2013