Cluster failover will not occur for a guaranteed document delivered to the shared default client for a cluster of Integration Servers that use Broker as the messaging provider. When the shared default client receives the document, it immediately acknowledges the document to the Broker and places the document in a subscribing trigger queue on one of the Integration Server nodes. If the receiving Integration Server fails before it processes the document, another server in the cluster cannot process the document because the document is stored locally on the receiving server. Additionally, the Broker will not redeliver the document to the cluster because the default client already acknowledged the document to the Broker. The receiving server will process the guaranteed document after the server restarts. (Volatile documents will be lost if the resource on which they are located fails.)