Originally Posted by aaupgrade
So, I am guessing it is your Amex TA that is saying they can't book your YUP fare - that makes more sense actually. Can you book it, hold it and then have your Amex agent do the final so they get their credit? Just a thought.
This works for me and my corporate TA (not AMEX). I book and hold on aa.com, then call my TA with the locator. They are able to "claim" the reservation and ticket it for me.