Trading Restrictions: Bound items cannot be traded. Some items may come bound to the soul automatically when equipped, while others become bound upon being placed in the inventory without being equipped.
Separation Process: To enable trading of a bound item, it must be separated from the soul using a separation scroll.
Separation Scroll: The item used for this process may vary depending on the level of the item.
These policies are implemented to maintain economic balance within the game and facilitate fair trading among players.
More information about the Soul System is available on the wiki page.