Originally Posted by mister_blonde
That's really strange. I use my credit card to buy tickets in my girlfriend's AAdvantage account all the time. Even though they don't match her name, I've never had any problems.
It's because they're advantage tickets from their own accounts.
iirc, There was a thread here a while ago discussing this. As
21A states, the agreed work around is to enter the child's name as the credit card holder.
You could also give a call to aa.com tech support and see what they say but they may try to charge you the $10.