# NFE-973

Source: https://xmlvalid.com/rules/NFE-973

> Rejeição: CNPJ do responsável técnico inválido (…).

- 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`
- Test: `not(nfe:infRespTec/nfe:CNPJ) or br:cnpj(nfe:infRespTec/nfe:CNPJ)`

In English: The CNPJ of the technical contact (infRespTec) is invalid.

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