How to interrupt/cancel an event sub-process instance?

[Boris666]

Hi,

I have the same question as the one posted here in 2022 by Khadija :

How to interrupt the activity of an event sub process

Hello, I have modeled a process that triggers a non interrupting event sub process. The problem is that i have a condition (in parent process) if it’s verified i must interrupt immediately the activity of the event sub process. As i see in Camunda modeler we can’t attach a boundary event on an event sub process, any ideas how i can solve this problem ? with a query of runtimeService ?

A solution might be the following one, what do you think about it ?

[DatyEighty]

Hello,

messages are not allowed to be sent from a process to itself, so I would not agree with your solution. Here are some ideas:

• Instead of the message catch event you could simply put an interrupting conditional event on the subprocess boundary.
• You could also nest another event subprocess within the event subprocess.
• You could use signal events, but remember they are broadcasted to all processes.

[Niall]

Good point about the message event.
I think in this case a nice idea would be to use an escelation event to trigger the event sub process and maybe an error event to break out of the sub process.

But indeed, the message event is the wrong one here, because as @DatyEighty said - it’s restricted to communication outside the scope of the process

[Ciaokakao]

Hi everybody

What about about a cancel end Event after the conditional event in the parent proceww and an Event based gateway within the Event subprocess that has on one of its branches a cancel intermediate Event that is follwed by an end Event?

Best regards

Ciaokakao

[DatyEighty]

Hi,

this won’t work, because it’s forbidden. A cancel end event is only allowed within transactions (a special type of subprocess) and cancel intermediate events are only allowed as boundary events attached to transactions.