A modification has been made . . .” message (includes mapping between ON and R). Some tickets, including many that have been upgraded with a Global Premier Upgrade, Regional Premier Upgrade or a Mileage Upgrade Award may display the message, “A modification has been made to your itinerary. Please contact United Reservations to have your ticket reissued.”
This might have been fixed ^ so check your itineraries as mine (waitlisted flight using an RPU) now shows correctly with only "
This flight segment is waitlisted" in red