Maintaining Inbound Document History for Received Documents
If Integration Server connects to a Broker version 6.0.1, you can configure the Inbound Document History setting to maintain a history of documents received by the server. This instructs the server to perform a very basic form of duplicate detection for all triggers.
If Integration Server connects to a Broker version 6.1 or later, you can configure duplicate detection on a per trigger basis. For information about configuring duplicate detection for webMethods messaging triggers using version 6.1 or later of Integration Server, see the webMethods Service Development Help.
In a cluster of Integration Servers connected to a Broker version 6.0.1, each Integration Server in the cluster maintains its own inbound document history information. That is, the inbound document history information is not shared across the cluster.