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Invalid Shopify Barcodes - GTIN

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# 1
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Capture.PNG

Anyone know why google is not accepting a valid GTIN-12 barcode? I verified using https://www.gs1.org/check-digit-calculator

1 Expert replyverified_user

Invalid Shopify Barcodes - GTIN

[ Edited ]
Top Contributor
# 2
Top Contributor

first, thank you for the screen-capture.

the gs1 check-digit code simply verifies if the digits
meet the mathematical model to ensure accuracy --
check-digits cannot verify if the data was legally
assigned by the manufacturer, is valid gs1 data,
or has been registered for global-trade.

valid global-trade-data (brand, gtin, mpn) are mainly legal designations --
that may be assigned only by the item's manufacturer, using gs1 valid data,
that uniquely identifies an exact item, tied to that specific manufacturer, and
must be identical for all merchants selling that same item; global-trade-data
cannot be self-assigned, internal sku or similar, or approximated.

typically, valid gs1 digits are below a valid gs1 bar-code,
printed on the item, at the factory, by the manufacturer --

https://www.gs1.org/barcodes/ean-upc

google only wants valid, accurate, data, assigned by the manufacturer
that all merchants are using for global-trade, assigned to exact item
being sold, and is being used by all merchants selling that exact item.

those screen-captured digits look to be restricted or for internal use only --
that is, not registered for global-trade, by the manufacturer, and not

designated to be used by all merchants, selling that same exact item.

the best likely course is to look directly on the item, to locate the
valid, registered for global-trade, gs1 bar-code digits, and verify
the digits match other merchants selling that same item.

if valid gs1 global-trade-data exists, valid global-trade-data
must be submitted; otherwise the item cannot be submitted
until valid global-trade-data (brand, gtin) is located.

otherwise, if no valid global-trade-data currently exists, google requires
identifier_exists to be submitted with a value of no -- then, brand, gtin,
and mpn cannot be submitted, at all, for all such items.

otherwise, some items simply cannot be submitted as shopping-ads.