Originally Posted by
aacharya
But this can be overriden. It's rare that folks want to, though. Go into the traveler information, and save the FF as nothing - then go back in and enter yours.
I have booked an award ticket for my wife using my miles, and my attempts to change the FF number to her own number failed. If I would replace my number with hers, the system would allow me to do so, but if I would thereafter open the reservation again, it would just revert back to my number...