We previously announced  changes to how Smart Bidding strategies are organized to help advertisers choose the right one. Google Ads API developers can now create new or update existing Search campaigns using the following bidding strategies:
What’s changing TargetCpa or TargetRoas standard bidding strategies in Search campaigns. This change will prevent creating new Search campaigns that use these strategies, as well as prevent updating existing Search campaigns to use these strategies. Instead, use the new optional target CPA field with MaximizeConversions, and the new target ROAS field with MaximizeConversionValue. This change will not  affect portfolio (shared) bidding strategies.AdWords API TargetRoasBiddingSchemeTargetCpaBiddingSchemeMaximizeConversions.target_cpa field required to migrate to the new style bidding strategies. Their usage will sunset when the AdWords API itself sunsets in April, 2022 . Switch to using the new bidding strategies when you migrate your code to the Google Ads API .What to do TargetCpaTargetRoastarget_cpa (mutable starting in v8) or target_roas fields instead.There will be no impact to bidding behavior due to this update.  Using MaximizeConversions with target_cpa will have the same bidding behavior as TargetCpa. Likewise, using MaximizeConversionValue with target_roas will have the same bidding behavior as TargetRoas.product level announcement  for more details on this change.TargetCpa or TargetRoas will continue to run as usual, and you will still be able to manage their bidding strategies and budgets as before. We’ll give advance notice before automatically migrating these old bidding strategies to the new format in 2022.forum  or at googleadsapi-support@google.com.