# NFE-600

Source: https://xmlvalid.com/rules/NFE-600

> Rejeição: CSOSN incompatível na operação com Não Contribuinte [nItem: …] (CSOSN …).

- 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: `not($indIEDest = '9' and $tpNF = '1' and $csosn) or $csosn = ('102', '103', '300', '400', '500') or $cfop = ('5915', '5916', '6915', '6916', '5912', '5913') or ($crt = '4' and $csosn = '900' and $cfop = ('5904', '6904', '5551', '6551'))`

In English: A sale to a non-contributor (indIEDest 9) has a CSOSN outside 102, 103, 300, 400 and 500.

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