We are sunsetting support for the promotion line field of Product Ads in AdWords Scripts, since this feature has been 
retired in AdWords in favor of automated extensions.
As part of this change, we have marked the 
getPromotionLine() method of 
ProductAd and the 
withPromotionLine() method of 
ProductAdBuilder as deprecated. These methods will start throwing errors on 
September 15, 2016. If your script uses these methods, then make sure you review them and make necessary changes to ensure they continue to work as expected.
If you have any questions about these changes or AdWords scripts in general, you can post them on our 
developer forum.
 Anash P. Oommen, AdWords Scripts Team
 Anash P. Oommen, AdWords Scripts Team