To delete an item from a sale prior to tendering...
Select the item you want deleted by clicking on it in the lower portion of the POS screen. The item will be brought to the top portion (gray portion) of the screen.
With the item selected, press the Remove Item from Sale shortcut key (default, F5) on your keyboard. The item is removed from the sale.
or. . .
Select the item you want deleted by clicking on it in the lower portion of the POS screen. The item will be brought to the top portion (gray portion) of the screen.
With the item selected, click on the Function Menu at the lower right of the screen and then select "Remove Item from Sale." The item is removed from the sale.
or...
Select the item you want deleted.
With the item selected (listed at top portion of the screen), change the Qty field to 0 and press Enter. A message box displays, asking if you want to remove the item from the sale. If you select Yes, the item disappears, just as when you press the the Remove Item from Sale shortcut key (default, F5).
But if you select No, the item remains on the screen (and the receipt), but it is zeroed out. At the bottom portion of the screen, the item will appear, but the quantity will be zero, and the Net Amount will also be zero. You would only use this option if you wanted the item to remain on the receipt, even though it has been deleted from the sale.
Delete more items if necessary using any of the above options. Then proceed with the sale as always.