UPDATE MATERIAL REQUIREMENTS PLAN
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 Manage Sales Orders screen in Costpoint Sales Order Entry, Manage Inventory Reservations and Manage Inventory Requests screens in Costpoint Inventory, or Manage Master Production Schedules screen in Costpoint Master Production Scheduling. Materials Requirements Planning (MRP) takes this independent demand, explodes manufacturing bills of material as necessary, and determines, part-by-part, what and when material needs to be purchased and manufactured to meet the requirements.
MRP produces the following:
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Planned orders, which inventory planners can turn into manufacturing orders or requisitions
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Planner action messages, which alert planners of the activities they need to perform
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Supply-and-demand information stored in a view for generating standard and customized MRP reports
During requisition generation, the preferred vendor must not be flagged as a payroll vendor, and its Approval Code must not be Not Approved or Pending. The vendor's Vendor Status for PO must not be On Hold.
Use this function to rerun MRP. Whenever there are modifications to supply or demand, you can run MRP to capture the modifications 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, or to use only the Update Master Production Schedules screen. Select the Plan MPS Part Requirements check box in the Corporate Settings block of the Configure Materials Requirements Planning Settings screen to indicate which screen you want to use.
Only one user can run this function at a time, and you cannot run it while the Update Master Production Schedules process is running.
You can run this process while other users are logged in the system performing other functions in the Materials domain, but it is best not to add or modify manufacturing bills of material while the MRP process is running.
Identification
Use the fields in this block to create a new parameter ID or to retrieve
a previously saved parameter ID. A parameter ID represents a set of screen
selection parameters. After you have saved a parameter ID and its related
parameters, you can retrieve them using Query.
You can use the retrieved parameters to produce reports and run processes
more efficiently and with greater consistency. The saved parameters are
also useful and necessary when you want to run the process as part of
a batch job. Many users save a unique set of parameters for each different
way they run a report or process. When you select a previously saved parameter
ID or parameter description, the associated saved screen selection parameters
automatically display as selection defaults. The page setup and print
options are also included in the saved parameter ID if there are any.
You can change any of the associated selection defaults as necessary.
Parameter ID
Enter, or click 
to select, a parameter
ID of up to 15 alphanumeric characters. Choose characters for your parameter
ID that help identify the type of selections you made in the screen, such
as PERIOD or QUARTERLY.
When you save your record, all the selections made in the screen are
stored with the parameter ID. Later, you can retrieve the parameter using
Query.
You can use the parameter to run the process more efficiently because
you can select the parameter ID with its previously defined screen selections.
After the default selections display in the screen, you can override the
defaults.
Description
Enter, or click to select, a parameter
description of up to 30 alphanumeric characters.
Selection Ranges
Use this group box to specify the range of warehouses and MPS plan you want to update.
Warehouse
Use the drop-down list to select the range you want to use in this process. The available options are:
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All — Select this option to include all available records. The Start and End fields are disabled for this option.
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One — Select this option to include only one record. You must enter that value in the Start field. The End field is disabled for this option.
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Range — Select this option to include a contiguous range of records. You must enter the beginning value for the range in the Start field and the ending value of the range in the End field.
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From Beginning — Select this option to include all the records from the beginning of the available records to a specific record in the range. You must enter the last value for the range in the End field. The Start field is disabled for this option.
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To End — Select this option to include all the records from a specific record to the end of all the available records. You must enter the value from which the range should begin in the Start field. The End field is disabled for this option.
Use the Start and End fields to specify the starting and ending warehouse IDs, as applicable.
MPS Plan
The Option field always displays One, to indicate that you can only select one MPS.
Use the Start field to enter, or use 
to select, the MPS ID that you want to use for this process. The description for this MPS ID in the adjacent unlabeled field. 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.
Options
Use this group box to specify additional options for this process.
MRP Method
Use this group box to specify options for completing the MRP run for the selected warehouses.
Full Regeneration
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.
Net Change
Select this option to run MRP for only those parts for which information has been modified since the last MRP run. This option is not enabled unless you have selected the Allow Net Change MRP check box in the Corporate Settings block on the Configure Materials Requirements Planning 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.
Last MRP Run Date
This field displays the date and time when MRP was last successfully executed for the selected MPS plan.
Display Dates
Click this button to display the last MRP run and last shop calendar dates.