Negative Inventory in SAP Business One

In SAP Business One, you can allow or block negative number (below zero) of your inventory. You can setting it on Administration – System Initialization – Document Setting – Block Negative Inventory (check the box if you want to block). You also can set the block negative inventory by 3 options :  Company   : When you specify Block Negative Inventory By Company, SAP Business One blocks an item only when its cumulative inventory quantity across all warehouses in your company goes below 0. Warehouse : When you specify Block Negative Inventory By Warehouse, SAP Business One blocks an item