United's flight firming system, TRE (Ticketing Record Enforcer), ensures that there is seat availability during periods of high demand. TRE is designed to cancel speculative bookings that block inventory from potential passengers. It does this by determining if there is a ticketing time limit on a given booking and asking for a ticket number if none appears in the record. The system identifies and cancels tickets that do not follow established fare rules, and monitors fictitious names, duplicate segments and churned records.
TRE communicates with the agent’s GDS via an SSR message. It is important to respond to messages sent by TRE to ensure that the system does not cancel the reservation.
Below is an example of what agents see when they receive an SSR message requesting a ticket number:
SSRADTK1SKK2. UA - PLEASE TICKET BY 10JUL2013/2159Z
SSRADTK1SKK2. UA - OR PNR WILL AUTO CANCEL PER TTL RULE
Auto-generated tickets will automatically enter the correct ticket number. In the rare instance that an agent needs to issue a manual ticket, the agent must send United an SSR TKMN message with the 13-digit ticket number. There should be an SSR TKMN message and ticket number for every passenger on the record.
For questions regarding messages from TRE or canceled bookings, please call the Executive Accounts desk at 1-800-521-0810.