Can't book award flight with Vietnam Airlines (error #CKO_101727)
I keep trying to book a flight on Vietnam Airlines using SkyMiles. The flight shows up in the website, but when I try to book, it throws a #CKO_101727 error. Does anyone know what this error is?
I called Delta and they said they can't even see the flight option I'm looking at, only seeing business availability. Economy is nowhere near out based on the lack of a "seats available warning," so I don't think it is like they ran out of seats and it just hasn't gotten updated yet. To make the situation more frustrating, customer service claimed that Vietnam Airlines isn't a Delta partner, which is just absurd (can't tell if this was incompetence or a lie to get me off the phone).
Where do I go from here?
EDIT: Resolved! After speaking with customer service a few times, I managed to get them to talk to ticketing. They seem to have been able to book it despite the fact that she thought the awards flight didn't exist. If anyone else ends up in a similar situation, ask them to speak with ticketing as it should be possible to get the flight. But do confirm with the partner airline that the flight exists afterwards---I did this and was only sure my booking went through after Vietnam Airlines confirmed.