---
title: BPMN (Business Process Model and Notation)
type: framework
tags: [bpm, modelling, notation, standard]
sources: ["[[sources/2018-dumas-fundamentals-of-bpm]]"]
created: 2026-04-13
updated: 2026-04-13
---

# BPMN — Business Process Model and Notation

OMG standard graphical notation for business processes. The canonical modelling language in BPM; the [[sources/2018-dumas-fundamentals-of-bpm|Fundamentals textbook]] devotes chapters 3 and 4 to it.

## Core elements

### Flow objects
- **Events** — start / intermediate / end; typed (message, timer, error, signal, escalation, compensation).
- **Activities** — tasks, sub-processes, call activities; typed (user, service, script, send, receive, business rule).
- **Gateways** — XOR (exclusive), AND (parallel), OR (inclusive), event-based.

### Connecting objects
- **Sequence flows**, **message flows**, **associations**.

### Swimlanes
- **Pools** — participants.
- **Lanes** — internal roles/units.

### Artefacts
- **Data objects / data stores**
- **Annotations**

## Advanced topics (ch. 4)
- **Events** — message, temporal, racing, racing-with-choice.
- **Exceptions** — internal, external, boundary, non-interrupting, event sub-processes, compensation.
- **Business rules** — referenced out to [[frameworks/dmn]].

## Executable BPMN (ch. 10)
Raised to executable status by specifying data types, data mappings, service tasks, user tasks, script tasks, rule invocations, and error handling.

## Role in APM
BPMN is an **operational** specification language per [[sources/2026-calvanese-agentic-bpm-manifesto]]: it tells agents *how* to act. APM adds a normative layer on top via [[concepts/framed-autonomy|frames]].

## LLM-assisted BPMN authoring
Recent work treats BPMN models as *mutable structures* edited via LLMs through a constrained set of operations rather than regenerated as XML each turn. See [[concepts/llm-assisted-process-modelling]] for the architectural pattern (structured intermediate representation + atomic editing functions + schema-validation retry loop) and [[sources/2026-licardo-bpmn-assistant|Licardo et al. 2026 (BPMN Assistant)]] for a concrete implementation. Frontier models (GPT-5.1, Claude 4.5 Sonnet) reach parity in direct-XML and JSON-IR formats; open-weight models (DeepSeek V3, Llama 3.3 70B) need the structured intermediate to be reliable.

## When to choose BPMN over flowcharts
For automation projects, the answer is almost always BPMN — its token semantics, gateway typology, executable extensions, and tool ecosystem are the only path to a workflow-engine-deployable model. See [[syntheses/bpmn-in-automation-projects]] for the full decision matrix, hybrid-usage pattern (flowcharts in scoping → BPMN in design/execution → text for stakeholder validation), and LLM-era cost-shift analysis.

## Related
[[frameworks/cmmn]] · [[frameworks/dmn]] · [[concepts/process-aware-information-system]] · [[concepts/llm-assisted-process-modelling]] · [[concepts/neuro-symbolic-bpm]] · [[syntheses/bpmn-in-automation-projects]] · [[syntheses/bpmn-modelling-practical-guide]]