"Sorry, we can't check you in at the moment"
Tried to check-in online for a IST-LHR flight, and the website doesn't let me.
The flight is with an AA codeshare number (at LHR I transfer to continue my trip to the USA with AA).
Clicking on the "Check-in unavailable - why?" link, I get:
Sorry, we can't check you in at the moment but don't worry, if you give us a call, our agent may be able to 're-validate' or 're-issue' the ticket. Otherwise we can fix it at the airport.
So, I called, twice (Turkish and UK numbers) and they tell me the reason is that this is a AA codeshare, otherwise the ticket is fine. I know that's not true, because I have done this many times. Any ideas what may be going on?