# NFE-383

Source: https://xmlvalid.com/rules/NFE-383

> Rejeição: Item com CSOSN indevido [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($simple and $csosn) or $csosn = ('102', '103', '300', '400', '500', '900')`

In English: An NF-e with the DANFE Simplificado Tipo 2 has a CSOSN outside 102, 103, 300, 400, 500 and 900.

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