Root element for the On products. The parent element for associations from one set of program identifiers to another. The parent element for program mapping information. Mapping status; possible values are 'ToBeMapped', 'Mapped', 'Unmappable'. The Gracenote program identifier value. The Gracenote identifier type, e.g., "TMSId". A link from this entity to another entity by identifier. Links are undirected by default. The type of this entity's identifier, e.g., "ProviderId". Date range provided to Gracenote by mapping requestor. Used only for assets which cannot be mapped, to provide further information on mapping issues. Information regarding cause of Unmappable status. The reason the unmappable message was generated, e.g., "Metadata Discrepancy" The mapping catalog name which contains this programMapping. Multiple mapping catalogs may be included, depending on customer configuration. The unique identifier for the requested program mapping. This identifier is unique across all catalogs. Optional descriptor of the linked id types (e.g., "TMSId/PartnerXYZId"). The On Updates schema version number.