Use this activity to run a Master Schedule Level 1 simulation for a Material Planning Scenario other than scenario 1, based on the current live Master Schedule situation together with extra demands that do not exist in the live data. Open the Calculate Master Schedule Level 1 assistant.
When the Simulation Source is Live Snapshot with Additional Demands, the simulation takes a snapshot of the live Master Schedule situation at the time the job runs, in the same way as the Live Snapshot simulation source, and then adds the additional demands defined on the Master Schedule simulation profile for the site and Material Planning Scenario. Use this simulation source to answer questions such as whether a possible new customer order can be promised on top of the demand that already exists.
Only the additional demands are read from the simulation profile. All other supply, demand, and planning parameters come from the live data, unless a planning lever is used to override the planning parameters for selected parts. Additional demands are defined on the Additional Demands tab on the Simulation Profile - Master Schedule Parts page, and each demand is included only when its Include in Simulation toggle is enabled.
Because the live data is read at the time the job runs, two runs started at different times can give different results. When you need a fixed and repeatable baseline for comparing planning scenarios over time, use Simulation Profile as the Simulation Source instead.
If there are top-level parts planned with the Master Schedule, it is recommended to begin the simulation with this activity and to continue with an MRP simulation for the same Material Planning Scenario afterwards.
Under Parameters, select the Site and the Material Planning Scenario. Scenario 1 is the live scenario and cannot be selected for a simulation. The remaining options work as in a live Master Schedule Level 1 calculation, for example, the run date and Stop MS on Error.
This simulation covers all Master Schedule Level 1 parts on the selected site. To limit the simulation to a single part, enter a Part No under Parameters. When you limit the run, only the additional demands for that part are included.
Under Simulation Controls, set the Simulation Source to Live Snapshot with Additional Demands. The Simulation Controls section appears only when the selected Material Planning Scenario is other than scenario 1.
Under Simulation Controls, you can also select a Site Planning Lever to override key planning parameters for selected parts during the run, for example, the planning method, safety stock, lot sizes, or primary supplier. For more information, refer to the About Planning Levers document.
Enable the Run Integrated with CRP toggle to calculate simulated machine and labor operation loads for the simulated supply.
Enable the Start site MRP process once MS completes toggle to continue with an MRP simulation for the same site and Material Planning Scenario, using the same Simulation Source and planning lever. Specify the MRP horizon and the MRP options for that run.
This job is posted as a background job and can be scheduled for later execution.