BPMN 2.1 RTF Avatar
  1. OMG Issue

BPMN21 — Incomming sequence flow at start event

  • Key: BPMN21-326
  • Legacy Issue Number: 17047
  • Status: open  
  • Source: University of Applied Sciences Dresden ( Michael Gruenert)
  • Summary:

    An interesting rule (page 245):
    ‘A Start Event MUST NOT be a target for Sequence Flows; it MUST NOT have incoming Sequence Flows. An exception to this is when a Start Event is used in an Expanded Sub-Process and is attached to the boundary of that Sub-Process. In this case, a Sequence Flow from the higher-level Process MAY connect to that Start Event in lieu of connecting to the actual boundary of the Sub-Process.’

    I never found a tool who implements this rule. On page 261 a ‘Boundary Start event’ does not exist. Only Intermediate Events are of type ‘boundary’ (interrupting/non-interrupting). Or interrupting/non-interrupting Start Events for an Event-Sub-Process (but they are not of type ‘boundary’).

    -> is it ok to remove this exception?

  • Reported: BPMN 2.0 — Tue, 24 Jan 2012 05:00 GMT
  • Updated: Fri, 6 Mar 2015 20:57 GMT