It is not possible to execute a process with Timer Start Event inside of Event Sub-Process

Deploy attached process EventSubprocessTimerStartEvent.bpmn Try to execute it Open process, and change Fire Multiple Times property of Timer Start Event inside of the Event Sub-process to # {cronPattern} Save and redeploy the process, try to execute it now Actual Result At first process won't be started with error But when you modify the process it will be started, despite of the pattern remains same, but set using Process variable instead of direct value Expected Result Process will be started in both case (direct value in the Fire Multiple Timer property and using process variable)