# Bruce Silver: None start event in subprocess

**URL:** <https://community.ofelia.com/t/bruce-silver-none-start-event-in-subprocess/6646>\
**Category:** Q&A\
**Created:** [8 November 2015 08:05 UTC](https://community.ofelia.com/t/bruce-silver-none-start-event-in-subprocess/6646 "2015-11-08T08:05:38Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![brian\_122](https://avatars.discourse-cdn.com/v4/letter/b/f07891/32.png) [@brian\_122](https://community.ofelia.com/u/brian_122)\
**Post date:** [8 November 2015 08:05 UTC](https://community.ofelia.com/t/bruce-silver-none-start-event-in-subprocess/6646/1 "2015-11-08T08:05:38Z")

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According to the Bruce Silver Methodology ([http://brsilver.com/the-rules-of-bpmn/](http://brsilver.com/the-rules-of-bpmn/)) _BPMN 0111. A start event in a subprocess must have a None trigger._

But Bonita BPM does not allow that - if I start drawing a sub process, a none start event cannot be pulled into its boundary. Why are message, timer, start and error the only triggers allowed?

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**Author:** ![system](https://europe1.discourse-cdn.com/flex013/uploads/community_bonitasoft/original/2X/6/6b7b18c0478f2645369e82e009b65e3b97f2cc12.svg) [@system](https://community.ofelia.com/u/system)\
**Post date:** [16 November 2015 16:42 UTC](https://community.ofelia.com/t/bruce-silver-none-start-event-in-subprocess/6646/2 "2015-11-16T16:42:56Z")

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Hi,

you are confusing Event Subprocess and Subprocess.

In Bonita, we have Event Subprocess, so no None none start event is possible and also Call Activities where you need to put a None start event in the called Pool.

regards,