 DetailedReservation | Detailed hotel reservation information.The Reservation class contains the current reservation being created or altered. |
| Reservation | Hotel reservation information.Summary version of the RoomStayType, initially created for the Travel Itinerary Message set. |
| TPA_Extensions | A placeholder in the schema to allow for additional elements and attributes to be included per Trading Partner Agreement (TPA).Allows extensions to be added to the OpenTravel specification per trading partner agreement. |