Simple Question (hopefully!) with quantity

[Fuzzo]

Well, Im very new to OSC and have just set it up. I have been doing some testing to make sure everything goes as planned. Everything worked fine untill I tried ordering a item (via payal) to test and make sure it works. I had set the quantity of the item I was going to "buy" to 3, and tried ordering 4. It said that the site did not have that many in stock, but it still let me continue buying. Is there a way to not let you buy over the set quantity?

 

This may have been asked before, but I searched and looked at many of the options in the admin section of OSC and could not find my answer.

 

Thanks!