Process / Events
Parent topic: Events Previous topic: Events Next topic: Start Events for Top-level Processes

Start Events

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.
  1. Start Events for Top-level Processes
    There are many ways that top-level Processes can be started (instantiated). The trigger for a Start Event is designed to show the general mechanisms that will instantiate that particular Process.
  2. Sub-Process Start Events
    There is only one type of Start Event for Sub-Processes in BPMN: None.
  3. Event (Inline) Sub-Processes Start Events
    A Start Event can also initiate an inline Event Sub-Process. In that case, the same Event types as for boundary Events are allowed.
Parent topic: Events Previous topic: Events Next topic: Start Events for Top-level Processes
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