Structure of sequence flow/message flow (BPMN)
A process in the form of a sequence flow describes the sequence in which the activities of a process are carried out. The sequence flow consists of the following objects:
Event (Start, Intermediate, End)
Activity (Process, Subprocess, Task)
Gateway (parallel (AND), exclusive (XOR), inclusive (OR), complex)
The objects are interconnected via the following connection types in accordance with specific conventions:
Sequence flow
Message flow