Optional ReadonlyidUnique identifier of the referenced Cart. Required if key is absent.
Optional ReadonlykeyUser-defined unique identifier of the referenced Cart. Required if id is absent.
ReadonlytypeType of referenced resource. If given, it must match the expected ReferenceTypeId of the referenced resource.
Resource identifier to a Cart. Either
idorkeyis required. If both are set, an InvalidJsonInput error is returned.