Originally Posted by
finhub
I had similar issue too. AY issued ticket, on AY flight number, but operated by CX.
Called AY CC and they said they can't assign me the seat and I have to call CX.
Just called CX and they were able to do the seat assignment in few seconds.
Shouldn't operating carrier be always able to book the seats even though the ticket is sold by other carrier?
Maybe u should try HUACA?
Just tell ur AY PNR and ask to get the seat assignment.
In my case, AY issued ticket on AY flight number but CX operated.
Unable to change seat in my booking. I mailed CX dk-office. They answered, Yes we can normally change your seat. But in this case AY has already assigned you specific seats. So, we (CX) can't do anything.
I called AY CC, after a minute or two the cc-staff was able to change my seat succesfully.
Don't know why AY assigned me some random seats in my initial booking, this seemed to be the reason why CX didn't want do undo the seat selection.
However, my AY-issued "Value" ticket books into N-class on the CX-flight. N fare isn't allowed to select seats at CX, so this might have something to do why they didn't want to change my seat.
After I got the seat selection solved with AY, I asked the staff what the normal procedure on codeshare flights is. The answer was, normally it is the operating carrier you should contact, however It still depends on case to case. In some cases it is the ticket issuer you should contact. Lesson learned? It is a fifty-sixty situation which carrier to try with first in these situations.

^