Starting September 27, 2023 you will see a change if you use custom audiences. You will no longer be able to update a custom audience type once you create the custom audience. For example, if you set the type to AUTO or INTEREST, then you cannot update it to the type SEARCH in the Google Ads API. This change ensures that your campaign continues to serve by making sure that your custom audience remains eligible.
What do I need to change?
Modify your code so it avoids attempting to update the type of an existing CustomAudience. If your code attempts to update the type field after September 27, 2023 then the API will return a CustomAudienceError.INVALID_TYPE_CHANGE error.
Where can I get support?
If you have questions, please reach out to us on the forum or at googleadsapi-support@google.com.
Nadine Wang, Google Ads API Team