If you pick an item by mistake — or a scanner fires twice — you can un-pick it at any time using the **[−]** button on the action bar.
## The pick tri-control
The action bar shows **[−] count/total Picked [+]** throughout the pick flow:
* Tap **[+]** to pick one unit (or confirm a scan)
* Tap **[−]** to un-pick one unit — even if the item was already marked as done
* Long-press either end to open a quantity entry field for bulk corrections
In Pick list mode, each row has its own **[−] [+]** counter so you can correct any item independently.
## Correcting in Required scan mode
When scan verification is set to Required, the **[+]** button is disabled — you must scan the item to add it. However, **[−]** is always active, so you can always correct an over-pick without needing a manager's intervention.
## Bulk corrections
Long-press either end of the **[−] [+]** control to open a quantity entry field. Type the correct count and confirm — the pick total updates immediately.