This document explains how to implement Dynamic Signaling in BPMN processes or event sub-processes to execute particular process instances or threads.
Problem Statement:
- A signal event is generally used to communicate between two separate BPMN flows.
- However, the signal event has a global scope. It will broadcast the event to all related sub-flows and handlers.
Whenever BPMN interacts with multiple requests, it is difficult for the process engine to identify the exact instance to process. There is also the possibility of the thrown signal getting caught by all active handlers and multiple requests at a time, which may lead to wrong execution.