Diagnosis
One of the three deadline types (latest end, requested end, lateststart) has been activated without defining a recipient for misseddeadline or modeled deadline monitoring.

System Response
If a deadline were missed a runtime, it would not be possible to notifythe appropriate recipient or deal with the missed deadline at all, andthe workflow is set to status error.

Procedure
In the Workflow Builder, enter a recipient for missed deadlineor an outcome name for modeled deadline monitoring in the stepdefinition. Any recipient specified in the task definition for therelevant missed deadline is only notified if nothing is specified inthe step definition.