When a deadline is triggered, and where the exception name matches the one set for a transition, the flow will execute along that transition to the next element along the workflow.
Add an Exception-type transition from the activity to the next (i.e., Send Reminder).
Set the type of condition to 'Exception'.
Enter an Exception name (e.g., TIMEOUT) in the Expression text area.
Confirm and close the properties window for the transition.
Tips
Warning
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Deadline Checker Interval
Remember to turn on Deadline Checker Interval in General Settings so that Deadlines will be triggered.
You can set multiple deadlines in an activity. They can include a first-level reminder (asynchronous) which is then followed by an escalation (synchronous) if the activity has not been completed within the time limit.
Remember to match the exception names. If they do not match, nothing will happen.