Publisher's identifier for the media buy
Buyer's reference identifier for the media buy
Optionalimplementation_date?: string | nullISO 8601 timestamp when changes take effect (null if pending approval)
Optionalaffected_packages?: Package[]Array of packages that were modified with complete state information
Optionalcontext?: ContextObjectOptionalext?: ExtensionObjectArray of errors explaining why the operation failed
Optionalcontext?: ContextObjectOptionalext?: ExtensionObject
Response payload for update_media_buy task. Returns either complete success data OR error information, never both. This enforces atomic operation semantics - updates are either fully applied or not applied at all.