Google Ads API v16 will sunset on February 5, 2025. After this date, all v16 API requests will begin to fail. Migrate to a newer version prior to February 5, 2025 to ensure your API access is unaffected.

Here are some resources to help you with the migration: You can view a list of methods and services your project has recently called using the Google Cloud Console:
  1. Open the APIs & Services in the Google Cloud Console.
  2. Click Google Ads API in the table.
  3. On the METRICS subtab, you should see your recent requests plotted on each graph. You can see which methods you've sent requests to in the Methods table. The method name includes a Google Ads API version, a service, and a method name, such as google.ads.googleads.v18.services.GoogleAdsService.Mutate.
  4. (Optional) Choose the timeframe you want to view for your requests.
If you have questions while you’re upgrading, reach out to us on the forum or at googleadsapi-support@google.com.
 - Thanet Knack Praneenararat, Google Ads API Team