Well, their was at first at my store today.

Usually, when I am low on stock I count how many units I have left and setup the product stock accordingly. When im out, I insert zero (0) so, ordering is disable.

However, one of my product had 1 unit in stock and somebody ordered 4 units. The order was processed and paid, but im short.

How can I disable over ordering, or configure zec-cart to not allow ordering more then units in stock ?