They obviously don't have the transaction semantics worked out. I have been at the gate and the person in front of me had the same seat number. They read it out

They obviously don't have the transaction semantics worked out. I have been at the gate and the person in front of me had the same seat number. They read it out. When I presented my pass the girl politely took my ticket and printed another one. If the person was not right in front of me I would never have known why. It is not unusual.