Why does nouz say my CM1 is overstated?

Because something you sold has no unit cost. A unit cost is what one piece of a product costs you to buy or make. nouz does not pretend a missing cost is zero. That would make your margin look better than it is. Instead, it counts the units without a cost and tells you.

You see it in several places. On the Overview, the card Needs your attention says, for example, 3 products have no unit cost. It looks at the last 90 days. The daily email warns you too. Those products show No cost on the Products page.

A unit counts as uncosted when its product had no cost in force on the day it was sold. A cost you enter today with today's date only covers sales from today on. So older sales stay flagged. To cover them, set the cost's effective-from date back to when that price really applied. That reprices those days and clears the flag.

On Insights, Products, a product without a cost shows a warning sign. It is not counted as a loss-maker, because its margin is not real. Once every product you sold has a cost, the warning goes away by itself.