Exactly Once Notification Feature
Most adapter notifications, such as Insert Notifications and Update Notifications, can use the Exactly Once notification feature. This feature ensures that notification data is not duplicated even if a failure occurs during processing. This is achieved by assigning unique IDs for each publishable document. After a processing failure, Integration Server checks for duplicate records in storage and ignores any duplicate IDs.
Note:
Stored Procedure Notifications do not support the Exactly Once notification feature because they do not use publishable document unique IDs.