MRP Generation

Use this form to calculate material requirements. You can control the manufacturing items to include in the process using inventory item trees. You can only select items assigned to the selected tree and branches on the right side of the form to include in the process, except if the item is linked to other items using a bill of material. In that case, all parent and component items of the selected item is included, even if they do not belong to the selected tree and branches.

Note: The MRP generation process should not be run in parallel with any other transaction processing that affects inventory balances — for example, purchase order receipts, inventory adjustments, and the like. This can result in Greentree Desktop calculating incorrect requirements.

Options Reference

Each option and field on the form is described below. Mandatory options and fields are highlighted in red.

MRP file name

Enter a file name to reference the results of the generation process.

Demand generation

This defaults in read-only format to the demand generation option selected on the Manufacturing Module Control form.

Forecast file name

Select the name of a forecast file from the dropdown list.

This option is not enabled if the demand generation is Sales orders only.

Calendar

This defaults in read-only format to the calendar of the selected forecast.

This field is not enabled if the demand generation is Sales orders only.

Demand time fence

Sales orders are considered for demand before and including the date you enter in this field. The forecast is not included.

After this date, demand is considered using the MRP Demand Generation option selected on the Manufacturing Module Control form. The date defaults to today's date, and cannot be before today's date.

The field is not enabled if the demand generation is set to Sales orders only.

End date

This is the last date the MRP generation calculates to. The forecast and MRP process must use the same calendar.

Critical items only

Select this option to run the MRP calculation for critical items only. For critical items that have a bill or material, all the components and sub assemblies and their components are included in the calculations.

FO warehouse

Select the warehouse against which to create planned factory orders. This is taken from the Manufacturing Module Control form.

PO warehouse

Select the warehouse against which to create planned purchase orders. This comes from the Manufacturing Module Control form.

All warehouses

Select this option to calculate MRP at the total item level. The forecast, sales orders, purchase orders and inventory levels accumulate to the item level for all warehouse locations.

If not selected and one warehouse is selected, the forecast, sales orders, purchase orders and inventory levels accumulate to the item level for the selected warehouse locations.

If not selected and more than one warehouse is selected, the forecast, sales orders, purchase orders and inventory levels accumulate to the item level for all the selected warehouse locations.

Select All

Click this button to select all branches of the inventory tree.

Unselect All

Click this button to deselect all branches of the inventory tree.

Maintain Critical Items

Click this button to open the Maintain Critical Items form.

Calculate

Click this button to run the MRP calculation process.

Review

Click this button to open the MRP Review form. Once a plan is calculated by the generation form, you can review and manage it on the MRP Review form.