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The barcode failed - does that mean it won't scan?

It will depend on why it failed and how badly it failed. Some faults are fatal and prevent scanning altogether while others diminish scanability and mean that a barcode will scan more or less reliably depending on what is wrong with it and where it is scanned.

The verification test includes a check of the GTIN for authorisation, correct allocation and correct formatting.   It is possible for a fully correct barcode symbol to contain a GTIN that has a fault.  In this case the result of the test would be a fail.  The barcode may scan perfectly but it would be conveying bad data that could compromise the users' records.

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