Driving integration, scalability, trust and integrity across the travel industry.
Learn more
Log into My Amadeus Services for product news, learning materials, and customer support.
Login
Our partnership with Microsoft accelerates our Cloud journey and unlocks new, AI‑powered innovations that strengthen and elevate the travel industry.
Learn more
Learn how this collaboration strengthens Amadeus' multi-cloud approach and AI innovation to improve efficiency, reliability and growth in travel.
Learn more
Amadeus, in collaboration with Globetrender, unveils the tech, policy and innovation coming to transform the face of travel.
Discover now
Built on airline input, with Microsoft support, exploring real AI use cases.
Access whitepaperLearn how we’re working to make travel a force for good.
Gain insights into Amadeus' 2025 business, financial performance, and sustainability.
Read the report
Every PNR that is created in the Amadeus System has associated historical information. The historical information is a record of the creation of the PNR and of any additions, modifications, cancellations, and deletions that you make. The System updates the PNR History at each End Of Transaction (EOT) entry. There is an exception: ''ARNK'' segments (Arrival Not Known) are not transferred to the PNR history.
Note: for TTR historycryptic entries, refer to the related links section below.
1. Sequence number for each modification which determines when changes occurred to a PNR
2. Historical code (2 letters) preceding every History element that identifies the actions taken
3. Flown Air and past-dated Auxiliary segments shown at the bottom of the display, numbered as they appear in the PNR
TO TOP
TO TOP