Event logs provide a record of workflow activity as a series of events, such as when a work item was created, when a milestone was reached, when an exception occurred, and other information useful for managing a workflow system. See About event logs for general information.
Each event that is logged is part of an event category, and has an associated event number. See Event logging categories for a description of each event.
When you initialize an isolated region, an event log called DefaultEventLog is automatically created for that isolated region. You can use Process Configuration Console to create and manage additional event logs for your application. For example, you might specify one event log in one workflow definition, and another event log in a different workflow definition to distribute the event data and enable an administrator to find items of interest more easily.