Display the SOP unallocated quantity against a stock item or warehouse item on a stock item

Add a column to the view stock item balances screens, lists & work spaces to display the quantity not allocated. You can see the physical stock, the allocated, the on order & the free stock but it is not easy to see the quantity not allocated (i.e. on back order or to follow) If you do not allocate stock because you do not allow negative stock & you do not have sufficient stock, or you do not wish to allocate stock because it is not due for shipment until a future date you currently have no visibility of this demand