Hey everybody,

I have a strange problem. A client of mine sells beads online, so now and then, someone orders (for example) 5 at once.
The other day, someone ordered 3, while only 2 were in stock. The stock is now -1

In the admin>configuration>stock>allow checkout it says "false", so this customer shouldn't have been allowed to check out!
Can anyone help me fix this so it doesn't happen again?

Thanks in advance,
Dimar