Originally Posted by
Sopwith
In some countries, Indonesia is one, some people have only one name. Not sure how they normally handle this on air tix, though. Try the Garuda forum?
Having said that, I expect almost all AC agents would be stymied by this.
And even a FT thread on this issue, plus there are a number of other links to the same question on TripAdvisor and elsewhere.
Flight Booking -Passenger has single name only in Passport
However, I am not sure how OP can solve this having booked on that OTA. Is it AC or the OTA who is asking for the change/re-issue fees?