Originally Posted by
Gardyloo
The tool will default to the operator of the first segment for ticketing purposes; in this case BA.
Not quite. The tool takes the
marketing carrier of the first flight as the carrier it will send to for ticketing. This creates a bug, when AA tickets (eg, for JL, RJ and S7), and it is not the operating carrier of the first flight, the tool tends to fail when entering payment details.