Changes to Offline Click Conversion Import Support in the Google Ads API

Starting on June 15, 2026, the Google Ads API will no longer accept new adopters of offline conversion imports, including enhanced conversions for leads. As with our previous announcements for session attributes and IP address , and Customer Match , Data Manager API is now the primary API for importing offline conversions. Developers who have not adopted offline conversion imports or Enhanced conversion for leads, or have not imported offline conversions between December 2025 and May 2026, will receive an error if they attempt to import offline conversions.