In the Item (SKU) box, type the serial number of the item you want to look up.
Select
(Control-U). The number you entered is replaced with the SKU number of the item.
Continue with the transaction.
If an item has a serial number associated with it, you can look up the item in POS by entering its serial number.
In the Item (SKU) box, type the serial number of the item you want to look up.
Select(Control-U). The number you entered is replaced with the SKU number of the item.
Continue with the transaction.
If the toolbar is not visible, then choose UPC Lookup from the Action menu.