# NFE-683

Source: https://xmlvalid.com/rules/NFE-683

> Rejeição: Chave de Acesso referenciada com Número inválido [nOcor: …] (número zerado).

- 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:ide/nfe:NFref/nfe:refNFe`
- Test: `substring($k, 26, 9) != '000000000'`

> Rejeição: Chave de Acesso referenciada com Número inválido [nOcor: …] (CT-e, número zerado).

- 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:ide/nfe:NFref/nfe:refCTe`
- Test: `substring($k, 26, 9) != '000000000'`

In English: A referenced key has the number zero.

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