Last year, we announced that you have until February 1st, 2017 to upgrade from ExperimentService to the new campaign drafts and experiments introduced in v201603. After this date, you’ll no longer be able to use ExperimentService.
  • API calls to ExperimentService across all API versions will result in an error
  • All experiments running via ExperimentService will be stopped
  • All ExperimentService experiments will be deleted and their stats will be unavailable
Check out our Campaign Drafts and Experiments guide for examples while upgrading your code. If you have questions while you’re upgrading, please reach out to us on the AdWords API forum.