Before being able to simulate a process, it must be represented graphically. Simulation is based on the diagram that describes the business process. The goal is to obtain a stream representing the various business process steps.

Simulating a business process consists of moving tokens through the various steps in the process. A token represents a request for work that must be executed by the process. It is introduced in the model from a process start event and stops at an end event.

For example: in a purchasing processing business process, the tokens that circulate are purchasing requests. A purchasing request is triggered at sending the request and ends at delivery of the order. In the meantime, it traverses the various steps (request recording, request processing, etc.).

In this way, the circulating tokens enable representation of the business process material or IS flows jetons circulant permettent ainsi de représenter le flux de matière ou d'information d'un processus.

From their respective BPMN diagrams, you can simulate the following concepts: