The source – ads-developers.googleblog.com
To switch to the new video ad format and avoid errors, TrueView for Action campaigns have until October 10 to update their code.
All existing campaigns with the TrueView for Action type have been renamed to Video Action campaigns. Therefore, the Google Ads API team recommends that you update the code for ad groups and for the ads themselves.
The code used previously for ad groups was:
videoCampaign.newVideoAdGroupBuilder().withAdGroupType("VIDEO_TRUE_VIEW_IN_STREAM")
It needs to be replaced with another one:
videoCampaign.newVideoAdGroupBuilder().withAdGroupType("VIDEO_RESPONSIVE")
For the announcements previously used code:
adGroup.newVideoAd().inStreamAdBuilder()
Now it should be updated like this:
adGroup.newVideoAd().responsiveVideoAdBuilder()