Issue 15959: number of start events for sub-processes (bpmn2-rtf)
Source:  (, )
Nature: Revision
Severity: Significant
Summary: The specification defines that the type for start-events of sub-processes can only be the none-type... However, the allowed number of start events for sub-processes is not mentioned... at least I couldn't find it throughout the whole specification. 

As far as I understood BPMN, two none-typed start-events in sub-processes would not make sense but the point should clearly be described in a specification.
Resolution: 

Revised Text: 
Actions taken:
January 14, 2011: received issue
Discussion: 

End of Annotations:=====

m: webmaster@omg.org
Date: 14 Jan 2011 06:56:28 -0500
To: <issues@omg.org>
Subject: Issue/Bug Report


*******************************************************************************
Name:            Matthias Schrepfer
Employer:        camunda services GmbH
mailFrom:        matthias.schrepfer@camunda.com
Terms_Agreement: I agree
Specification:   BPMN2.0 beta 2
Section:         10.4.2
FormalNumber:    dtc/2010-06-05
Version:         2.0
Doc_Year:        2010
Doc_Month:       June
Doc_Day:         05
Page:            248
Title:           number of start events for sub-processes
Nature:          Revision
Severity:        Significant
CODE:            3TMw8
B1:              Report Issue


Description:


The specification defines that the type for start-events of sub-processes can only be the none-type... However, the allowed number of start events for sub-processes is not mentioned... at least I couldn't find it throughout the whole specification. 

As far as I understood BPMN, two none-typed start-events in sub-processes would not make sense but the point should clearly be described in a specification.

Subject: [Issue 15959]
Date: Wed, 2 Feb 2011 14:58:57 +0100
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Thread-Topic: [Issue 15959]
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From: Natschläger Christine <Christine.Natschlaeger@scch.at>
To: <bpmn2-rtf@omg.org>


There might be one fitting sentence in the BPMN Specification:


There MAY be multiple Start Events for a given Process level.


I think that this also applies to Sub-Processes. Several Start Events can create several instances (similar to top-level processes) and would, therefore, make sense.

However, I agree that this point should be described more clearly in the specification.