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 ExperimentServiceacross all API versions will result in an error
- All experiments running via ExperimentServicewill be stopped
- All ExperimentServiceexperiments 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.
 Nadine Sundquist, AdWords API Team
 Nadine Sundquist, AdWords API Team