# NFE-612

Source: https://xmlvalid.com/rules/NFE-612

> Rejeição: GTIN da unidade tributável (cEANTrib) inválido [nItem: …] (…).

- Level: error
- Rule sets: SEFAZ authorisation rules of NF-e 4.00 MOC 7.0 Anexo I, NTs up to 2026.010
- Context: `nfe:infNFe/nfe:det`
- Test: `$eanTrib = ('SEM GTIN', '') or br:gtin($eanTrib)`

In English: The GTIN of the taxable unit (cEANTrib) has a wrong check digit.

Validate a document against these rules: https://xmlvalid.com/validate