Over Selling Stock

I have recently had a problem where a customer purchased more quantity of an item than was shown in stock.

I have already got stock > allow checkout set to false, but I think I know where the problem lies.

If I have 5 items in stock, and a customer adds 6 to their basket, then it will correctly say insufficient stock. However, these items have a text box for the customer to specify their requirements, so if they add the item 6 times with different text on each, it will allow them to continue. I presume ZC treats them as different items because of the attributes, and as the quantities are not deducted until checkout is completed, it will not see a problem. On completion of checkout, the quantity will be reduced to -1 and thus not allow any more to be ordered after this.

Is there any way to stop this happening, or is this something I will just have to be aware of.

Thanks

Is there any way to stop this happening, or is this something I will just have to be aware of.

You will just need to be aware for now.

Thanks Kim, I thought that was the case, but I just wanted to check.