I have a sequence starting tomorrow, DUB->IST and then IST->BOS the next day. I'm trying to enter US API data online, which is fine except I'm being asked for visas for both legs, and my only options are visa/schengen resident for DUB->IST (Ireland isn't in Schengen), and visa for IST->BOS (I'm travelling on an ESTA). UK passport holder.

Is this an "ignore and sort it out at the airport" or have I missed something? I want to be sure my GE number is added to the booking as well as having valid US API.

Surely nothing could be this rubbish?