# BPMN Process Model (BPMN)

Cite in `CrossReference` only if the instance exists (`new-artifact.sh` checks this for you):

- **BC** — The stated business goal/objective the process serves
- **SA** — Participants / lanes — cite S-IDs
- **UCD** — Forward link: actors and goals derived from this process

## Required sections (after Metadata / Version History)

1. **Purpose and Business Goal** — the Business Case objective realized
   (cite `[BC-001]`).
2. **Participants (Pools / Lanes)** — every participant, mapped to an `SA`
   stakeholder ID where one exists.
3. **Process Diagram** — valid BPMN 2.0. Message flows cross pool
   boundaries; sequence flows do not. Keep the diagram source next to the
   document (BPMN has no native markdown form) so it stays diffable.
4. **Element Table** — `Element | Type | Lane | Description` for every
   event, activity and gateway. Every gateway states its type (XOR/AND/OR)
   and its matching join.
5. **Path Coverage** — every path runs from a start event to a defined end
   event; no dead ends.