Google Ads API v24.2 released with multi-party approvals, synthetic content labeling and new experiment types

v24.2 (with minors v23.3, v22.2 and v21.2) added MultiPartyAuthReview support for sensitive user-access actions, SyntheticContentInfo/SyntheticContentAttestation on Asset and Ad for AI-generated creative labeling ahead of the EU AI Act, ad_network_type segmentation of performance_max_placement_view, YouTube brand channel data links, LANDING_PAGE_TEXT_GENERATION asset automation, COMPARE_CAMPAIGNS campaign-mix experiments and PMAX_TEXT_CUSTOMIZATION_FINAL_URL_EXPANSION experiments, plus Local Services Ads in Performance Max and creator topic insights.

Advertiser attestation fields (synthetic_content_info.advertiser_attestation.status/source) were exposed but immutable in v22-v24.2 and became fully mutable in v25. Google also revamped the release notes format to list breaking changes separately and added a 'Feature deprecations and unversioned changes' guide. v24.2 sunset: June 2027.