Use this screen to identify the material requirements necessary to meet a company's product demand. You can enter independent demand (demand that is not tied to a higher level assembly) for parts using the Enter Sales Order, Enter Reservations, or Edit Master Production Schedule screens. MRP takes this independent demand, explodes manufacturing bills of material as necessary, and determines, part-by-part, what material needs to be purchased and manufactured to meet the requirements and when.
MRP produces planned orders, which inventory planners can turn into manufacturing orders or requisitions; planner action messages, which alert planners of the activities they need to perform; and supply-and-demand information stored in a view for generating standard and customized MRP reports.
Use this function to rerun MRP as needed. Whenever there are changes to supply or demand, you can run MRP to capture the changes and modify the schedules. MRP is typically run during the night or on the weekend, when users are not accessing the Materials data.
You can use this screen with or without the Master Production Scheduling (MPS) module. If you implement the Master Production Schedule, you can plan and schedule end-item products through the MPS module. You can then use the forecasts, orders, and requirements from the MPS function to drive the material requirements planning process. You can decide whether to use this screen to plan MPS-planned parts (defined in the Part Planning Data screen in Product Definition), or to use only the Generate Master Production Schedule Plan screen. Use the Plan MPS Part Requirements check box in the MRP Corporate Settings screen in MRP Settings to indicate which screen you want to use.
Use this group box to select the warehouses whose material requirements you would like to process.
Use the drop-down box to select the range of warehouses for which to process material requirements. Available options are:
All (the default)
One
Range
From Beginning
To End
If you did not select the Plan Warehouse Separately check box in the MRP Corporate Settings subtask of the MRP Settings screen, this field cannot be changed.
Enter, or use Lookup to select, the warehouse (or starting warehouse for a range) for which you would like to process material requirements.
Enter, or use Lookup to select, the ending warehouse (for a range) for which you would like to process material requirements.
Select this option to perform a complete material requirement processing run for the selected warehouses. (If the Range Option is set to something other than All, Full Generation is the default MRP method.) A full regeneration is also required if you do not select Production for the MPS Plan, below.
Select this option to run MRP for only those parts for which information has changed since the last MRP run.
This option is not enabled unless you have selected the Allow Net Change MRP check box in the MRP Corporate Settings subtask of the MRP Settings screen. If you select this check box, you must run MRP in Full Regeneration mode one more time to make the Net Change option available.
From the drop-down list of all available MPS plans, select the one for which you want to generate a schedule. The default option is Production, which means the MPS plan for the official production plan will be processed. If you select any other MPS plan code, the official production plan is not affected.
This field displays the date and time when MRP was last successfully executed for the selected MPS plan.
This field displays the last shop calendar date set up in the Shop Floor Calendar screen in Production Control. This field displays only if you have selected the Shop Days option in the Lead Time Calculation group box in the Production Control Settings screen in Production Control.