Glossary of terms

Latest updates by April 28, 2022


Please discover the alphabetical list of terms with the definitions: 


  • ADM (Agent Debit Memo): means penalty issued by the Carrier to Party A resulting from the violation operations of Party A or Party B, including but not limited to abuse of GDS to obtain seats, abandoned itinerary etc.

  • Carrier: means an airline or charter company that provides personal and baggage transportation services by air or any other mode of transportation and makes said services publicly available through API or other linking technology for various distribution channels

  • GDS (Global Distribution Systems): A global distribution system is a computerized network system owned or operated by a company that enables transactions between travel industry service providers, mainly airlines, hotels, car rental companies, and travel agencies. The GDS mainly uses real-time inventory from the service providers.

  • Flight: Transportation by air provided by the carrier, displayed through the carrier's channels.

  • IATA (International Air transport association): Founded in 1945 as the World Airline Industry Association, IATA's member airlines in 2016 consisted of 290 airlines, primarily major carriers, representing 117 countries/regions and accounting for approximately 82% of total available seat mile air traffic.

  • NDC (New Distribution Capability): a travel industry-supported program launched by IATA for the development and market adoption of a new, XML-based data transmission standard (NDC Standard).

  • Order: It is the reservation information that is recorded electronically or otherwise left on the platform.

  • Personal data: It means all kinds of information recorded electronically or otherwise that can identify a specific natural person alone or in combination with other information, including the name and telephone number of the merchant user, and the name, gender, nationality, document information, contact information (including but not limited to cell phone number and email address), payment information, itinerary information, etc. of the service passenger.

  • PAX or Passenger: the natural person who entrusts the merchant to make the corresponding reservation。

  • PNR: Passenger name record, also known as a booking document, refers to the digital document that contains the flight itinerary details of a passenger or a group of passengers traveling together. It is an important part of the ticket booking procedure and can also be used for ticketing services.

  • Segment: Refers to a flight with a single flight code (flight number) between the passenger's first boarding point and its final destination, such as a passenger's one-way travel A-B is one flight segment, a passenger's round-trip travel A-B-A is two flight segments, A two-passenger round-trip journey is four segments, and so on.

  • Ticket number: Same as PNR, and ticket has been issued. The airline/carrier has confirmed the service engagement by providing the ticket record. As proof of passenger flight transportation service, the ticket number can be used to exchange passenger information between intermodal or codeshare PNRs/carriers.

  • VOID: refers to an event for voiding an air ticket that was issued but not delivered. A ticket might be voided if a mistake was made, such as the wrong credit card was used to issue the ticket, or the passenger's name was incorrect.