Gets or sets the rest of the voice telephone number, including the phone extension of the private customer.
This property is optional, but only taken into account if Direct is chosen as BookingType and the customer isn't already created in the database or its ID is unknown. Alternatively the property CustomerPhoneNumber may be used, but in this case CustomerPhonePartInternational, CustomerPhonePartAreaCode and CustomerPhonePartDirect have to be handed over as empty strings.
CreateReservationV2Request Class | SunnyCars.Schema.Osi.WsReservation.V4 Namespace