The Start Event indicates where a particular Process will start. In terms of Sequence Flows, the
Start Event starts the flow of the Process, and thus, will not have any incoming Sequence Flows.
Start Events can trigger any of these types of Processes
- Top-level Processes
- Sub-Processes (embedded)
- Global Process (called)
- Event Sub-Processes
Note: A Start Event is OPTIONAL: a Process (top-level), a Sub-Process (embedded), or a Global
Process (called Process) may have, but is not required to have, a Start Event.