# NFE-888

Source: https://xmlvalid.com/rules/NFE-888

> Rejeição: GTIN da unidade tributável (cEANTrib) sem informação [nItem: …] (use "SEM GTIN").

- 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 != '' or $crt = '4'`

In English: cEANTrib is empty; a product without a GTIN takes "SEM GTIN" (MEI issuers, CRT 4, excepted).

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