The shipment was received by an aggregate code, but unit codes do not scan. Why?
Its identifier is linked to a list of individual units.
010203040506It is common for goods to be received by the code of an aggregated package and only later discovered to have unreadable unit labels.
That does not mean the receiving process was wrong. Group reception confirms the movement of the package, not the physical condition of every single unit label inside it.
As a result, damage is often noticed only later — when the box is opened, when items are placed on shelves or at the checkout counter.
If the unit marking still exists, the first step is specialised reading. Even a worn or partly torn label may still be decodable.
If the label is completely gone, the composition of the aggregate package and the movement history become the key source of information.
So aggregate reception is not the cause of the problem; it is also part of the solution because it preserves useful shipment context.