Glossary
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ADM (Agency Debit Memo)
A fee charged by airlines to travel management companies for errors or violations made during the booking and ticketing process. ADMs are issued for various infractions including fare rule violations, unauthorized penalty waivers, duplicate reservations, commission errors, and PNR mistakes. The average cost of an ADM is approximately $269, though amounts vary based on the violation type and airline. ADMs are processed through BSP/ARC systems and represent a significant operational cost for TMCs.
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ADR (Average Daily Rate)
A metric widely used in the hospitality industry to indicate the average revenue earned for an occupied room on a given day. Essential for hotel sourcing and budget planning.
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Advance Purchase Policy
The advance purchase policy is often included in the general travel policy of a company and defines how long in advance employees should book corporate travel.
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Agent-Assisted Bookings (AAB)
Bookings made through a travel agent rather than through self-service online booking tools. These typically involve complex itineraries or require specialized expertise.