# Regenerate On Order File (ORDER.P1)
Read Time: 1 minute(s)
The ORDER.P1 procedure recalculates and sets the on order quantities in the inventory (INV) and on order (ORDER) files from all files which may replenish inventory such as purchase orders and work orders.
Frequency of Use
The on order quantities are maintained automatically as purchase orders and work orders are processed. Therefore, the only time you really need to run this procedure is when the file has been corrupted or records are being converted from another system.