The Lock Function is an inventory feature added in Patch 1.04.00 that prevents the selected item from being sold, dropped, or accidentally used. It targets the long-running player complaint that vendor screens made it easy to sell rare drops or quest-flagged items by mistake, especially during cleanup runs after a long farming session.
Quick Information
Property | Value |
|---|---|
Patch added | |
Scope | Per-item toggle, saved on the item itself. |
Persistence | Yes - survives save and reload. |
Affects | Selling, dropping, discarding, and accidental use. |
What It Does
Prevents selling. Locked items still appear in vendor windows but are skipped over by the bulk-sell shortcut and rejected if manually selected for sale.
Prevents discarding. Drop and discard actions on a locked item show a notification and refuse to complete.
Prevents accidental use. Items that have a use action (consumables, recipe scrolls) ask for an extra confirmation while locked.
Visible icon. A small lock icon overlays the item in the inventory grid so the player can scan a tab and see at a glance which items are protected.
How to Use It
Highlight an item in the inventory and trigger the lock action from the contextual menu (the same prompt used for sort, ungroup, and similar inventory actions). Triggering it again unlocks the item. The lock state is bound to the item itself, so locking a stack of arrows applies to the whole stack and persists when the stack moves between containers such as the new Sturdy Gatherables Chest or the wardrobe.
When to Use It
Quest-grade weapons and key Abyss Gear sources. Locking the Sword of Starlight or unique Abyss Artifact drops keeps them safe during shop cleanups.
Refining and crafting reagents that have variable visual stack sizes. Locking the rare end of the stack avoids accidentally dumping it during a sell-trash run.
Gift items with set vendor recipients. Locked gift items will not be sold to a different vendor by mistake.
Rare materials accumulated for long projects, such as the late-game refinement pushes that consume bismuth-class resources.
Pairing with Other UI Changes
Patch 1.04 also tightened up the inventory more broadly: items are now grouped under five tabs (All, Documents, Equipment, Food, Materials, Others), sort settings persist across sessions, and shops show how many of an item the player already owns. The Lock Function complements those changes by flipping the focus of the screen from "sell faster" to "sell safely."
See Also
Inventory - inventory system overview.
Patch 1.04.00 - patch that introduced the feature.