Gets or sets the unique id of the Reservation, for which the alternative Regions and Locations should be searched.
This property is optional, whereby 0 has to be handed over per default. The unique id handed over herein has to identify a Reservation of the operator(agency), the used Ticket has been created for.
RegionsTreeRequest Class | SunnyCars.Schema.Osi.WsReservation.V4 Namespace