This is a friendly reminder that, on February 27, 2015, we will sunset DFP API versions v201311, v201308, and v201306. At that point, requests to these versions will fail. We'll also remove them from our online documentation and the client libraries. If you are currently using one of these versions, this is an excellent time to begin migrating to a supported version. See the release notes for a list of the many new features in our recent API versions.
Going forward, all DFP API versions will follow a consistent deprecation schedule: versions will be supported for one year, deprecated for one quarter, then sunset. This means each of our quarterly API versions will be available for 15 months from the time of release. This deprecation schedule enables us to spend more time improving the latest versions with new features.
Note that v201311 is the last version that supports ClientLogin, which was officially deprecated across all of Google on April 20, 2012. If your application is not yet using OAuth2, you must migrate before Feb 27, 2015.
If this task seems daunting, don't fret, we have you covered. On our Developer page, we have a helpful OAuth2 guide to make sure the transition is as smooth as possible. As an added reason to switch, the DFP API now supports OAuth2 service accounts. You can add service account users directly in the DFP UI. For more information, see here for a guide on how to use a service account user with the DFP API.
If you have any feedback or comments about this deprecation, or the API in general, please feel free to leave them on our forum.