Google is set to make a significant change to its Ads API, affecting Customer Match uploads. Starting April 1st, developers who haven’t used their developer token for Customer Match uploads in the past 180 days will no longer be able to do so via the Ads API. This shift is part of Google’s broader strategy to centralize and secure audience data handling.
Understanding the Change
What’s Changing?
If you fall into the inactive bucket, any attempt to upload Customer Match lists through the Google Ads API after April 1 will fail. Google wants you to move those workflows to the Data Manager API. This change only applies to Customer Match uploads — all other campaign management and reporting tasks should continue as normal in the Google Ads API.
Why is Google Making This Change?
Google positions the Data Manager API as a more modern, unified data ingestion solution across its platforms. It includes stronger security protocols and features not available in the Ads API, such as confidential matching and enhanced encryption. This move signals Google’s push to centralize and better secure audience data handling.
The Impact on You
If you or your developers haven’t touched Customer Match uploads in the last six months, this change could catch you off guard. After April 1, 2026, the old workflow simply won’t work — and errors will replace uploads.
What You Need to Do
Check whether your developer token has been used for Customer Match recently and plan a migration to the Data Manager API now, before Google flips the switch. This proactive approach will ensure a smooth transition and avoid any disruptions to your advertising campaigns.
Frequently Asked Questions
What is Customer Match?
Customer Match is a Google Ads feature that allows you to reach your existing customers with tailored ads. It uses your customer data to show ads to people who have interacted with your business, such as making a purchase or visiting your website.
What is the Data Manager API?
The Data Manager API is a more modern, unified data ingestion solution across Google’s platforms. It includes stronger security protocols and features not available in the Ads API, such as confidential matching and enhanced encryption.
When will this change take effect?
This change will take effect on April 1st, 2026. Developers who haven’t used their developer token for Customer Match uploads in the past 180 days will no longer be able to do so via the Ads API.
What should I do if I’m affected?
If you’re affected, you should check whether your developer token has been used for Customer Match recently and plan a migration to the Data Manager API now. This proactive approach will ensure a smooth transition and avoid any disruptions to your advertising campaigns.
Will this change affect all other campaign management and reporting tasks?
No, this change only applies to Customer Match uploads. All other campaign management and reporting tasks should continue as normal in the Google Ads API.
Conclusion
Google’s shift to the Data Manager API is a significant change that could impact your advertising campaigns. By understanding the change, its implications, and what you need to do, you can ensure a smooth transition and continue to reach your customers with tailored ads.
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