A simulation scenario defines criteria for simulating the execution of a business process as defined in a process definition. The scenario defines the behavior and properties of the process instances created from the process definition including the flow of control within the process, for example, the probability with which a specific activity will be performed.
A simulation scenario consists of a process definition, criteria to indicate the start and end of the simulation run, and information about the individual activities, such as participants, the data to be handled, the estimates of an activity or resource. A simulation scenario file includes the details of a process simulation as well as - after running a simulation - the simulation results. You find more information on the simulation process in section 12.2 Defining a Simulation Scenario.
The data that is specified for a scenario, such as the start and end times for executing the simulation and the probability of executing a particular activity, can be acquired from the history data for process instances that is held on the server. For more information, refer to "12.2.2 Using Simulation Values From History".
The simulation of a process can help you in calculating cost and time for specific activities, and thus optimize your business processes.