Use this activity to run a Project Material Requirements Planning (PMRP) simulation for a Material Planning Scenario other than scenario 1, based on the supply and demand data stored in a simulation profile. Open the Perform PMRP Simulation assistant. The simulation plans project parts per project activity following the same rules as the live PMRP process, but the results exist only within the selected Material Planning Scenario.
When the Simulation Source is set to Simulation Profile, the simulation uses only the data held in the simulation profile for the selected site and Material Planning Scenario. It does not take a snapshot of the live situation. All independent demands, open supply orders, and project on-hand balances come from the profile, including any additional demands defined per project activity. Key planning parameters also come from the profile, unless a planning lever is used to override them for selected parts. This provides a fixed and repeatable baseline, making this simulation source suitable for comparing planning scenarios over time.
PMRP simulation and MRP simulation share the same simulation profile for a site and Material Planning Scenario. You can review and edit the profile data on the Simulation Profile - MRP Parts page.
The standard inventory available for material transfer requisitions is captured by the Prepare PMRP Simulation Profile Data background job after each live Material Planning Scenario 1 MRP run. The job captures a snapshot of nettable stock in standard inventory by inventory location. During the import process, the Import Scenario 1 Results to Simulation Profile assistant copies the captured inventory quantities to the corresponding simulation profile. The PMRP simulation sums the captured location-wise quantities to determine the total standard inventory available for transfer. It does not use the Beginning On Hand quantity stored in the simulation profile. When Use Std Inventory in Project MRP/Project MS is enabled on the project site, the PMRP simulation uses these quantities to calculate how much material can be transferred from standard inventory to the projects.
Under Scenario Selection, select the Calculation Type and the Material Planning Scenario, and set the Simulation Source to Simulation Profile.
You can run this simulation with the Calculation Type set to Per Project PNG, Per Activity, or Per Planned Netting Group. Selective simulation is not available when the Simulation Source is Simulation Profile, because the profile holds the complete supply and demand data set for the site and Material Planning Scenario. To simulate a subset of parts, use Live Snapshot or Live Snapshot with Additional Demands as the Simulation Source.
Under Parameters, select the Site and, depending on the calculation type, the Project ID, the Activity Seq, or the Planned Netting Group. You can also specify the run date and MRP horizon. The remaining options work as in a live PMRP run, for example, Stop Project MRP on error and Plan Safety Stock Receipt on PMRP Run Date. For the Per Activity calculation type, you can also enable the Exclude PPSAs grouped under any PNG toggle.
To override planning parameters for selected parts during the simulation, such as the planning method, safety stock, lot sizes, or primary supplier, select a Planning Lever. 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 project supply.
Under MRP Parameters, enable the Start Site MRP process once PMRP is complete toggle to continue with an MRP simulation for the same site and Material Planning Scenario, using the same Simulation Source and planning lever. For that MRP simulation, you can also enable the Plan Alternate Component and Plan Safety Stock Receipt considering MRP Run Date toggles.
This job is posted as a background job and can be scheduled for later execution.