Use of process interfaces in BPMN...??
How can processes 1, 2 and 3 be connected at the BPMN lower level? If I try to use the link event, it cannot be connected to the start event.
Also, the BPMN collaboration model cannot be assigned to a VACD. So, how can the two levels be connected?

Shankar Ganesh on
Have you seen this discussion thread?
BPMN 2.0 - How do I link models in a sequence, and allow users to navigate?