Colloquial term for an identification number usually presented under a barcode, for example EAN-13. Makes it easier to recognize a specific trade item. The number itself does not confirm the authenticity, full composition or validity of the description found on the Internet.
Product ID and bar code
EAN is the common name for the identifier associated with a barcode, while GTIN stands for the trade item number in the GS1 system. The image of lines is a way of recording data by machine, not the product itself. A change in capacity or packaging type may mean a different trade unit. When comparing offers, it is worth comparing the number with the name, version and photo, because an incorrect description of the seller does not become correct just because he repeated the ID.
The identifier digits must be kept in their entirety, even when they start from zero. The spreadsheet may incorrectly treat them as a regular number. When importing a catalog, it is worth storing the code as text and checking the variant, instead of matching products only by a similar title.
Meaning and application
The product code is useful when comparing offers, but it should not be the only information. Also check the full name, package contents and version. Similar images or a common commercial theme may apply to different products.
In practice
Write down the code from the label and compare it with the store description. If there is a discrepancy, check whether the offer covers a single package or a set. If the data doesn't match, ask for clarification rather than assuming the larger capacity is obvious from the graphics.
Do not rely on a valid-looking EAN as a stand-alone confirmation of authenticity or quality. Also, do not read the origin of all raw materials from the beginning of the issue. Identification of the offer and assessment of the manufacturer are different stages of checking the product.