On Notification Timeout
The On Notification Timeout process starter specifies a process to execute when a timeout is reached for storing notification data for a Notify activity. For more information about the Notify activity and how to specify a timeout for storing notification information, see Notify.
You can specify an On Notify Timeout process definition for a specific Notify Configuration. The process definition with the On Notification Timeout process starter executes when a Notify activity with a matching Notify Configuration experiences a timeout. You can specify one or more On Notify Timeout process definitions for specific Notify Configurations, but you should not create more than one process definition for the same Notify Configuration. Once a Notify activity experiences a timeout of its stored notification information, that timeout can only apply to one On Notification Timeout process definition.
You can also specify that an On Notification Timeout process definition applies to any Notify activity that experiences a timeout. If there is no On Notification Timeout specified for the Notify Configuration of the Notify activity, the process engine calls the On Notification Timeout process definition that has the Any Notify Config field checked.
Engine.WaitNotify.SweepInterval
custom engine property to the desired number of seconds. However, as you decrease the number of seconds in the interval you incur further engine overhead.