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Why Am I Getting the Error "Your session TraceID is expired" in the TicketLCC API Response?

This error occurs when the TraceID used in the TicketLCC API request is no longer valid.

A TraceID is generated during the flight search process and remains active only for a limited time. If the booking or ticketing request is delayed, the session may expire.

Common Reasons for This Issue

  • TraceID Validity Time Expired
    TraceID has a short lifespan, and if TicketLCC is called after a long delay, it becomes invalid.

  • Ticketing Attempt Without Fresh Search Flow
    TicketLCC must be called only after completing the correct flow:
    Search → FareQuote → TicketLCC

  • Using an Old or Cached TraceID
    Reusing a previously generated TraceID from an old session will cause this error.

  • Delay Between Booking and Ticketing
    If there is too much time gap between Book API and TicketLCC API, the airline session may expire.

Recommendation

To resolve this issue:

  1. Perform a fresh flight search to generate a new TraceID.

  2. Complete the booking flow immediately without delay.

  3. Use the latest TraceID in FareQuote, Booking, and TicketLCC requests.