Originally Posted by
zombietooth (Post # 7)
That is a stupid feature that has bothered me for a long time, along with the inability to have someone in another cabin on your PNR. [Emphasis added.]
No reservation system ever has permitted more than one fare basis code per segment on the same passenger name record (PNR) / reservation.
All passengers must be on the same fare, or the PNR will be split to make the appropriate adjustment.