Google Ads API tightens conversion data rules - Probably Going To Break Your Conversion Tracking in 2026

Google is tightening its Ads API data rules in 2026, blocking new adopters of session attributes or IP address data in conversion imports starting Feb. 2nd. Developers are advised to migrate to the Data Manager API to ensure continuity of measurement, access to richer data signals, and alignment with Google’s long-term measurement infrastructure.