Optionaladcp_Release-precision AdCP version (VERSION.RELEASE, e.g. "3.0", "3.1", "3.1-beta"). On a request: the buyer's release pin — the seller validates against its supported_versions and returns VERSION_UNSUPPORTED on cross-major mismatch, or downshifts to the highest supported release within the same major. On a response: the release the seller actually served — clients SHOULD validate the response against that release's schema, not against their pin. Patches are not negotiated; surface them as build_version on capabilities for operational visibility. When omitted, falls back to adcp_major_version (deprecated) or server default. Buyers SHOULD emit both adcp_version and adcp_major_version through 3.x to remain compatible with sellers that only read the legacy field. NORMALIZATION: SDKs that read full-semver values from bundle metadata (e.g. ComplianceIndex.published_version = "3.1.0-beta.1") MUST normalize to release-precision ("3.1-beta.1") before emitting on the wire — meta-field values are NOT valid wire values.
Optionaladcp_DEPRECATED in favor of adcp_version (release-precision string). Servers MUST continue to honor this field through 3.x. Removed in 4.0. Original semantics: the AdCP major version the buyer's payloads conform to. Sellers validate against their supported major_versions and return VERSION_UNSUPPORTED if unsupported. When omitted, the seller assumes its highest supported version.
Seller's media buy identifier
Client-generated unique key for this request. Prevents duplicate feedback submissions on retries. MUST be unique per (seller, request) pair to prevent cross-seller correlation. Use a fresh UUID v4 for each request.
Normalized performance score (0.0 = no value, 1.0 = expected, >1.0 = above expected)
Optionalpackage_Specific package within the media buy (if feedback is package-specific)
Optionalcreative_Specific creative asset (if feedback is creative-specific)
Optionalmetric_Optionalfeedback_OptionalcontextOptionalext
Request payload for provide_performance_feedback task