Our retail outlet and online store share the same inventory and we have situations where online orders cannot be fulfilled because an item that was in stock at the time the customer placed the order online, has been sold in our physical retail store, before we had a chance to view/pick the online order.��We'd like Neto POS to have a pop up at the POS screen when inventory is zero and ask, do you want inventory go to negative? The sales assistant can then decide to either allow or deny negative inventory.��