Event Notification Services (ENS) are an optional set of services offered as part of the Sabre APIs product offering. With Event Notification Services, travel agencies subscribe to receive notifications about specific changes to their customers' travel information. Using ENS, travel management companies can be notified about these changes in a matter of several seconds, letting them process the information and provide timely service to their customers. ENS currently publishes notifications on three topics - Passenger Name Record (PNR), Queues and Profiles.
|ENS Release notes|
|ENS Developer Guide (Updated February 2020)|
|Payload Notification Formats (Updated 2012-07-18)|