Use this activity to run MRP and Master Schedule simulations using current supply and demand data combined with simulated independent demands recorded on the Simulation Profile – MRP Parts and Simulation Profile – Master Schedule Parts pages under the Additional Demands tab. This method allows you to assess how potential demand changes may affect current supply and projected inventory balances.
To perform these simulations, use either the Perform MRP Simulation assistant or the Calculate Master Schedule Level 1 assistant and set the Simulation Source as Live Snapshot with Additional Demands.
Just as with live MRP or Master Schedule calculations (scenario 1), if there are top-level parts planned with the Master Schedule, it is recommended to begin with a Master Schedule calculation. If all the top-level parts are MRP‑planned, it is enough to start with an MRP simulation because, during the MRP process, when a child part is Master Schedule‑planned, a Master Schedule calculation for that part is performed automatically.
If Master Schedule–planned top-level parts exist, but the simulation is started with an MRP simulation, the process begins by exploding demands to MRP‑planned parts using the planned receipts already calculated for Master Schedule Level 1 parts in the selected Material Planning Scenario.
You can run MRP simulations for either a site or a planning network. However, Master Schedule Level 1 simulation can only be calculated at the site level.
These simulation jobs run as background processes and can be scheduled to execute at a later time.
As a result of this activity, MRP and/or Master Scheduling simulation are executed using the latest live data along with the simulated independent demands. The results provide a view of potential planning outcomes, without generating real supply proposals.