Atrinik Server  4.0
FLAG_UNIQUE Uses
Type(s) Description
Misc Object, Amulet, Ring, Bracers, Brestplate Armour, Boots, Cloak, Girdle, Gloves, Helmet, Shield, Book, Projectile, Shooting Weapon, Key, Weapon Unique items exist only one time on a server. If the item is taken, lost or destroyed - it's gone for good.
Container

Unique items exist only one time on a server. If the item is taken, lost or destroyed - it's gone for good.

All contents of a unique container are unique as well.

Floor

Unique floor means that any items dropped on that spot will be saved beyond map reset.

Useful for maps like guild storage.