Why this is mistaken
A barcode can identify a product class without tracing one unit's actual cost. Specific identification needs a stable unit identifier linked to acquisition, cost, sale or removal, and ending status. FIFO answers a different question: it orders costs assigned to expense. Neither method proves physical movement.
Where to watch
When this mistake may appear
- The item has a barcode, so specific identification applies.
- FIFO means the oldest physical unit shipped first.
- A balanced layer schedule proves the source records.
Check your work
Your work may contain this mistake if:
- Uses a shared product code as an actual unit trace, infers physical shipment order from FIFO, or treats a balanced schedule as proof of source facts.