Originally Posted by
Vuelos
This sounds like a hiccup... have them 'store the fare' and then talk to the manual reissues department. They should be able to fix this.
The only thing I can think is that BKK-ICN-GRU-LAX-ICN-BKK is pricing over the MPM on the ticket.
I checked the MPM, and the return is fine. Given the potential routing issue on the outbound that HongKonger mentions, it could be an issue, but I'm guessing OP just omitted one segment.