# NFE-933

Source: https://xmlvalid.com/rules/NFE-933

> Rejeição: Informada modalidade de determinação da BC da ST diferente de MVA e informado o campo pMVAST [nItem: …] (a critério da UF).

- Level: warning
- 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($icms/nfe:modBCST and $icms/nfe:modBCST != '4' and $icms/nfe:pMVAST)`

In English: pMVAST is given with an ICMS-ST base other than the added value margin (a check some states make).

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