App Engine Documentation PHP Documentation API Documentation \google\appengine\runtime\OverQuotaError Thrown by APIProxy calls when they have been blocked due to a lack of available quota. Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 3.0 License, and code samples are licensed under the Apache 2.0 License. For details, see our Site Policies. Java is a registered trademark of Oracle and/or its affiliates. Last updated October 4, 2016.