The FIFO-detalje (bilag) (FIFO detail, vouchers) page shows the stock movements for the item you right-clicked, in FIFO order. Here you can see exactly which movement created the difference between inventory value and FIFO value.
What the page shows
A table of the item's stock movements, oldest first: date, stock voucher, location, kind (the movement type's number), quantity, cost price and row value.
Løbende lager (running stock) and Løbende FIFO (running FIFO) after each movement.
Lag-rest (layer remainder) and Lag-værdi (layer value): how much of a purchase is still in stock, and what it is worth.
Negativt (negative): marks movements where stock went below zero.
How to use it
The page is not a tab. You open it by right-clicking an item on Lagerværdi vs FIFO (Inventory value vs FIFO) or Diff pr. dag (Difference per day) and choosing Drill through → FIFO-detalje (bilag).
The page only shows the item (and department and location) you clicked.
Look for rows where Løbende lager turns negative (the item is oversold), or where the cost price differs from the FIFO layer's cost price.
Look up the voucher in Shop Manager by its stock voucher number.
Good to know
Rækkeværdi (row value) = quantity × cost price.
If you do not use the page, support can hide it for you — contact support.