TST creation acknowledgment Application error information General error information returned by ticketing application Description in free flow text of the error returned by ticketing application PNR record locator information for this transaction. This PNR record locator is used for tracing purpose. List of TST tattoos created. As we can have 10 TST per Pax, 99 passenger per PNR, and a TST split with the Infant , the max number of TST is 1980. TST tattoo number created by the transaction. Reference information on passengers. Code identifying the data validation error condition. Identification of a code list. Code identifying the agency responsible for a code list. To identify the type of application error within a message. Application error details. To provide error free text information. Free flow text describing the error Exchange and link unique identifiers qualifies the type of the reference used. Code set to define Tattoo number (It is in fact the Tst Display Number) Gives the TST ID number To provide specific reference identification. Passenger/segment/TST reference details To provide reference identification. Qualifyer of the reference (Pax/Seg/Tst) Passenger/segment/TST reference number To specify the information required to identify a reservation. Record locator. To specify a reference to a reservation. Reservation control information The TST Id Number : The Id number allows to determine a TST in the single manner. Format limitations: an..70 Format limitations: an..3 Format limitations: n..5 Format limitations: an..5 Format limitations: an..20 Format limitations: n..11