What happens if i made a mistake in an online debit card transaction?

I recently bought sunglasses online with my debit card and put in the right card number but wrong 3-digit security number. I thought the order would just not go through but it has and i can't cancel or edit it. On the tracking thing it says the order is being shipped and everything is fine but i'm concerned as to what is going to happen? Will everything just work out and the 3-digit security number is only for i have a security number or what?|||Don't worry. If the item is going to ship, then they just ignored the security code, probably because all the other info you put in (like your address, etc.) matched the credit card number.