Default document store. The default document store contains guaranteed documents delivered to the default Broker client for the Integration Server. When Integration Server retrieves documents delivered to its default Broker client, Integration Server places the documents in the default document store. Documents remain in the default document store until the dispatcher determines which triggers subscribe to the document. The dispatcher then moves the documents to the trigger queues for the subscribing triggers.

Trigger document store. The trigger document store contains locally published guaranteed documents that are delivered to a specific webMethods messaging triggers. For each trigger, Integration Server creates a queue for locally published guaranteed documents in the trigger document store. A guaranteed document remains in the trigger queue within the trigger document store until the server successfully processes the document.

Outbound document store. The outbound document store, sometimes called a client-side queue, contains documents waiting to be sent to the Broker. Integration Server places documents in the outbound document store when the configured Broker is not available. When the connection to the Broker is restored, Integration Server empties the outbound document store by sending the saved documents to the Broker.