United's flight firming system, TRE, ensures that seats are available in periods of high demand. TRE is United’s flight firming program designed to cancel future speculative bookings that block inventory from potential passengers. TRE determines if there is a ticketing time limit on a given booking and asks for a ticket number if none appears in the record. It also determines if tickets are issued according to the established fare rules and cancels the booking if it is not correct. TRE identifies and cancels duplicate bookings ensuring that United can maximize the seat availability for agencies to sell.

The company’s flight firming program TRE communicates with your GDS via an SSR message. It is important to respond to messages sent by TRE to ensure that reservations are not canceled.

This is what agents will see when they receive an SSR message from TRE requesting a ticket number:

SSR ADTK 1W PLZ SEND TKT NO.S BY 2200/DATE CST
SSR ADTK 1W OR RES WILL BE AUTO-XXLD

Auto-generated tickets will automatically enter the correct ticket number. In the rare instances that a manual ticket needs to be issued, you must send United an OSI message with the 13 digit ticket number. There should be a ticket number and OSI message for every passenger on the record.

The Automated Flight Firming System also monitors fictitious names, dupe segments and churned records.

If there are any questions about messages from TRE or canceled bookings, please call the executive accounts desk at 1-800-521-0810.