During a shelf count, some expected items may never be scanned. Depo puts them under Not Counted. That is different from saying their stock is zero.
Check the scope
If you chose one shelf, bins beneath it may also be in scope. Expected quantities were captured when the count started. Before deciding an item is absent, check the correct bin; the same item may also be on another shelf.
Choose deliberately
Leave Unchanged keeps the stock for that line. Use it when you did not count the item and plan to check later. Set to Zero says the item is not at this location; when you finish, Depo records an adjustment for the difference. Do not set every uncounted line to zero without checking the physical shelf.
Before finishing
In Review, inspect matched, short, over and not-counted lines separately. Correct a typed quantity before you finish. A finished count becomes history and the adjustments appear in Activity. The full counting guide shows the whole flow.