Conventions for connections
ARIS models
The use of connections in the EPC is subject to the following conventions for the simulation:
Events (except start and end events) must have exactly one incoming and one outgoing connection.
Start events must not have an incoming connection and must have exactly one outgoing connection.
End events must have exactly one incoming connection and must have no outgoing connections.
Functions must have exactly one incoming and one outgoing connection.
Rules may have several incoming and several outgoing connections.
BPMN diagrams
The use of connections in the BPMN process diagram is subject to the following conventions for the simulation:
Events (except start and end events) can have multiple incoming and outgoing connections.
Start events must not have any incoming connections.
End events must not have any outgoing connections.
Activities can have multiple incoming and outgoing sequence flows.
Sequence flows must not cross pool boundaries.
Gateways can have multiple incoming (join) and outgoing (split) gates.
Gateways must not be the source or target of message flows.
Message flows must connect two pools or two objects in separate pools.