Thanks for the reply and thread link. I've gotten that error in past but chaging dates and airports usually takes care of that and I can get as far as the screen with option to hold the reservation.

But since yesterday it is happening with all non AA award flights with far out dates into 2025. I've called AA reservations line and they've confirmed that there isn't any issue with my account, so I'm kind of lost as to what can be done about it as I want to book flights within next few weeks.