NFE-612
Rejeição: GTIN da unidade tributável (cEANTrib) inválido [nItem: …] (…).
In English The GTIN of the taxable unit (cEANTrib) has a wrong check digit.
What the rule checks
As the rule set's publisher wrote it. The rule runs on every element the context matches, and fails where the test is false; the validator reports the line of that element.
nfe:infNFe/nfe:det
$eanTrib = ('SEM GTIN', '') or br:gtin($eanTrib)
Checked with NF-e 4.00, NF-e 4.00 with authorisation protocol