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Is writeback supported for both adding car service to an existing PNR and creating a standalone PNR for car service only bookings?
Car service writeback is currently was initially supported only when adding car service to an existing flight, hotel, and/or rental car booking. Car service writeback is not yet NOW also supported for car service only bookings. !
Can car service writeback be enabled separately for adding car service to an existing trip vs standalone car service only booking?
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