Hi all! Is there a way to find out which activity instance originally “triggered” (from a BPMN perspective) the cancellation of a historic task instance? Interrupting boundary events, interrupting sub process start events and termination end events seem to be candidates as “root causes” for such task cancellation… and maybe even others I am missing? My goal would be to safely retrieve the BPMN element id and label of this “BPMN root cause”! 
Hi Martin,
I think there exist no direct way to see which activity canceled another one.
You could check it indirectly, check which activity instance was executed afterwards.
Greets,
Chris
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