| BookingSource | To specify booking information for a specific reservation. |
 ProcessingInfo | To specify the action to be taken on this information. |
| 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. |
| VehReservation | Represents the vehicle rental reservation that was successfully created.The VehicleReservationType complex type identifies the data that describes a vehicle reservation. This data includes information on the customer(s) associated with the rental and details on the vehicle that is being rented. |