In the aviation industry, a pseudo city code, pseudo-city code, or office ID, is an alpha-numeric identifier for a corporate user of a computer reservation system (CRS) or global distribution system (GDS),[1] typically a travel agency.
[2] Pseudo city codes (PCCs) have many uses in the airline industry.
A travel agency's head office or ticketing department may have more access and see all bookings made within the company.
Some GDS systems have a "training pseudo" where agents cannot make live bookings.
Only those agencies within that pseudo-city code will be able to access and sell the fare.