Observed Signal · May 7, 2026 · Technical Release · Source: https://developers.google.com/feeds/ad-manager-release-notes.xml · Impact: 4/5 · Sentiment: Positive
Google Ad Manager API Beta: May 7, 2026 Updates
Google published release notes for the Google Ad Manager API (Beta) with a May 7, 2026 update that adds new services, report dimensions and metrics, and several breaking changes requiring client migration. New features include RichMediaAdsCompanies and McmEarnings services, a readonly OAuth scope, new report dimensions/metrics (e.g., LINE_ITEM_AVERAGE_NUMBER_OF_VIEWERS, CREATIVE_SSL_*, AD_SERVER_ACTIVE_VIEW_REVENUE), and write operations for ApplicationService. Breaking changes include removal or renaming of several report dimensions (DEMAND_SUBCHANNEL_ALL removed; UNIFIED_PRICING_RULE_ replaced by PRICING_RULE_), and error response changes where AdManagerError is removed in favor of google.rpc.BadRequest. The notes also reiterate prior migration deadlines for report dimension and resource name changes and list multiple earlier feature and breaking changes since 2024.
Major platform (Google) API release with new services, metrics and breaking changes that require client migrations and will affect integrations, reporting and error handling across publisher ad stacks.
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Key Takeaways & Evidence Grounding
- May 07, 2026 release added RichMediaAdsCompanies and McmEarnings services to the Ad Manager API (Beta).
- New report dimensions/metrics added include LINE_ITEM_AVERAGE_NUMBER_OF_VIEWERS, CREATIVE_SSL_ dimensions, TARGETS_CUSTOMER_MATCHING_LIST, and AD_SERVER_ACTIVE_VIEW_REVENUE.
- A readonly OAuth scope was added (referenced in the Ads Developer Blog).
- Breaking changes: DEMAND_SUBCHANNEL_ALL report dimension removed; UNIFIED_PRICING_RULE_ dimensions replaced by PRICING_RULE_ dimensions.
- AdManagerError was removed from error responses; field-level errors are now provided via google.rpc.BadRequest (clients must migrate).
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Google Ad Manager API: Beta Release Notes & Breaking Changes
Google published production release notes for the Google Ad Manager API (Open Beta) on August 4, 2026, describing new services and features, breaking changes, and deprecations. Notable additions include new report dimensions (e.g., CTR_WITH_COMPANION, IMPRESSIONS_WITH_COMPANION) and video pod metrics; LiveStream enhancements (dvrWindowDuration, slate, segmentUrlAuthenticationKeys, daiAuthenticationKeys, daiEncodingProfiles); new DAI services; and several new or expanded services such as PartnerService, ViewabilityProviderService, CreativeWrapperService, ChildPublisherService, and write methods for CompanyService. The notes reiterate earlier breaking changes: renamed report dimensions/metrics with deprecated values removed after October 1, 2025; a restructuring of Report message types requiring client library import path updates (wire compatible); and a canonical resource name change for CustomTargetingValue with migration required by July 28, 2025. Open Beta features include Private Auctions, Ad Breaks, Interactive Reporting, and publisher-provided signals.
Google Ad Manager API: July 13, 2026 Release
Google published production release notes for the Google Ad Manager API on July 13, 2026. The notes list breaking changes, deprecations, and new features: report dimensions and metrics were renamed with deprecated values removed after October 1, 2025; Report messages will be restructured (changing import paths in client libraries) while remaining wire compatible; the canonical resource name for CustomTargetingValue changed (clients must migrate before July 28, 2025); several resources now return default-valued fields in responses; and the API remains in Open Beta with added support for Private Auctions, Ad Breaks, Interactive Reporting, and publisher-provided signals. The document also records multiple migration deadlines (January 5, 2026; January 30, 2026; July 13, 2026) and new services added in recent updates.
Google Ads API v24.2 Released
Google announced the v24.2 release of the Google Ads API (published 2026-06-25). The minor release includes security updates, multi-party approvals (MPA) to require secondary admin approval for sensitive account actions, and AI-transparency features that expose SyntheticContentInfo and SyntheticContentAttestation on Asset and Ad resources so advertisers and Google systems can attest to AI-generated creatives. Reporting and asset enhancements include Performance Max placement segmentation by ad_network_type, YouTube brand channel links, automatic landing-page text generation, and new experiment types (Campaign Mix Experiments and Performance Max feature testing). Google also published updated client libraries, revamped release notes and deprecation guidance, and released minor versions v23.3, v22.2 and v21.2 with early interfaces for synthetic content attestation.
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