Using the Exactly Once Notification Feature
Adapter notifications can use the Exactly Once notification feature. This feature ensures that notification data will not be 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.
To use the Exactly Once feature, you must enable client-side queuing in Integration Server. For details, see the webMethods Integration Server Administrator’s Guide for your release.
Note:
You can only use this feature if the notification is used to publish a document, not if it is associated with a service.