Calculate material requirements planning (MRP)

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The system calculates the requirement through a batch job. The end result consists of time scheduled order proposals for production and purchases, all collected in registers for maintenance and release.

Note: If several warehouses are used, the material requirements are calculated warehouse for warehouse.

The items that are listed in the MRP are those that are set up accordingly in the Item file:

Requirement calc is set to YES.
Planning method is set to 2 (MRP) or 7 (MRP, Supply plan) will be considered during the MRP calculation. For planning method 2, the supply quantities are retrieved (because no stock on hand is taken into consideration) and MRP proposals are created based on the supply plan quantities and the demand. The demand could be sales orders, manufacturing components and manual allocations. For planning method 7, the supply quantity is the net quantity (i.e. the supply quantity proposals are already calculated in the Supply plan. They are copied into the MRP proposal without any calculation performed in MRP). See Supply plan process
Item type is either 1 (end item), 2 (sub-assembly), 3 (material), or 4 (purchased).
An Order rule is defined.

Note: To ensure validity of the output, the MRP should be calculated regularly.

Select the Work with reports/jobs – MFG orders menu item.
You access Work with batch jobs. Select MRP_RUN and click Submit job.
You access Material requirements planning (MRP). Complete the following fields:

Gross requirements: Indicate if quantity on hand will be taken into consideration when creating requirements.

Supply plan forecast: Indicate if a supply plan forecast version is selected.

Sales order: Indicate if sales order lines should be included in the calculation.

Include held sales: Optional entry. Indicate if held sales orders should be included in the calculation.

Include sales return: Optional entry. Indicate if credit sales orders defined with update stock on hand should be included in the MRP calculation.

Manufacturing order: Indicate if manufacturing orders and bill of material should be included in the calculation.

Purchase order: Indicate if purchase order lines should be included in the calculation.

Sales quotation: Indicate if sales quotations should be included in the calculation.

Manual reservations: Indicate if manual reservations should be included in the calculation.

Horizon date: Enter the horizon date. This is the final date for completion of the requirements that are included in the run.

Netting period: This is used when both forecast and customer orders are used as input to MRP. Depending on the Forecast period type, the netting period is divided into either months or weeks. If DC1 Inventory Control is installed and activated the forecast period type is retrieved from the Forecast period type field in the IC control file. If not, the forecast period type will be retrieved from the Sales/SOP period field in the MFG control file. Note: Only customer orders are considered as input to MRP before the netting period end date (= the last date of the period).

Incl fcst in netting: Indicates if forecast inside the netting period should be included in the calculation. Mandatory entry if Supply plan forecast is set to YES.

Netting option

Indicate how the forecast should be netted against the sales order.

Code	Description
1	Remaining forecast for present period is calculated according to how many days that is left for the period. Based on the remaining forecast, the open sales order will be used for the forecast netting.
2	Total forecast for the present period. Open and delivered sales order for present period will be used for netting the total forecast to remaining forecast in the period.

Include safety stock: Indicate if safety stock should be included in the calculation.

Use order rule: Indicate if the order rule that is defined on the item should be used during order proposal calculation. If you set this field to NO, all items will be handled as discreet requirements (order rule 1).

Start date calc: Indicate if the requirement start date is to be calculated using the item’s lead time or the total needed operation time by ticking one of the following: Lead time or Bill of routing.

Divide forecast: Mandatory entry if Supply plan forecast is set to YES. Indicate if and how the supply plan forecast is to be divided by ticking one of the following options:

Code	Description
1	Divide forecast according to the period interval that is defined in the IC control file.
2	Divide forecast to week.
3	Divide forecast to day.

Recalculate ll code: Indicate if low level code for items included in item structures should be recalculated.

Create workload: Indicate if planned workload should be created. If you set this field to NO, any existing planned workload will be deleted. If you set this field to YES, planned workload will be created and workload for all manufacturing orders will be re-created. Note: If capacity has been changed workload will be created based on the new capacity but all dates on operations and order header will remain unchanged.

Re-sch ind days (late): The number of re-schedule indication days determines what manufacturing or purchase orders can be ignored by the system when re-schedule proposals are created. The indication days are counted after (late) the requirement date of the proposal. This is used to avoid the re-scheduling of manufacturing or purchase orders for which the requirement date has been slightly changed. If the change is within the defined number of days, no re-schedule proposal will be created for the manufacturing or purchase order.

Re-sch ind days (early): The number of re-schedule indication days determines what manufacturing or purchase orders can be ignored by the system when re-schedule proposals are created. The indication days are counted before (early) the requirement date of the proposal. This is used to avoid the re-scheduling of manufacturing or purchase orders for which the requirement date has been slightly changed. If the change is within the defined number of days, no re-schedule proposal will be created for the manufacturing or purchase order.

Proposal in passed: Indicate if calculated order proposal could be created in passed time or not. If this field is set to YES, proposals will be created according to the demands requirement date. If this field is set to NO, proposals will not be created in passed time, i.e. the lowest start date will be current date, and based on start date the requirement date will be calculated.

See the Panel help for information about the remaining fields.

Click OK. The system calculates the MRP. Exit the routine.