# NFE-782

Source: https://xmlvalid.com/rules/NFE-782

> Rejeição: CSOSN inválido para emitente MEI (CRT=4) [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 $crt = '4' and $idDest != '3' and $csosn) or $csosn = ('102', '300')`

In English: An MEI issuer (CRT 4) with the DANFE Simplificado Tipo 2 may only use CSOSN 102 and 300.

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