BPMN Extensibility

Spec Page	Spec Rule Text
44	Extension attributes MUST NOT contradict the semantics of any BPMN element.
44	In addition, while extensible, BPMN Diagrams should still have the basic look-and-feel so that a Diagram by any modeler should be easily understood by any viewer of the Diagram. Thus the footprint of the basic flow elements (Events, Activities, and Gateways) MUST NOT be altered.

Spec Page

Spec Rule Text

Extension attributes MUST NOT contradict the semantics of any BPMN element.

In addition, while extensible, BPMN Diagrams should still have the basic look-and-feel so that a Diagram by any modeler should be easily understood by any viewer of the Diagram. Thus the footprint of the basic flow elements (Events, Activities, and Gateways) MUST NOT be altered.