If each item has a unique code im compleatly baffled as how a dupe hack is even possible but there you go.. stupid programmers

.
Item's belong to a character or storage etc.
an item has ItemID Ammount PostionX PostionY Combine Enchant in invintory
If the item's have a unique auto incrementing number for them in the db then how is it possible to dupe. Either their code creates a new entry or supplys invalid data eg missing the unique item id. So you have to trick it to do that to dupe. Of course its been patched.
Duping nothing is better than duping anything, but money would probably be better cause then you can just spend it or trade it among 1000 accounts to look normal.
Im guessing someone didnt make the feild in the db Unique or Indexed when they made it.... hence allowing duplicate id's. Bad integrity indeed
Good night :P sleep time.