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NFE-351

Rejeição: Valor do ICMS da Operação no CST=51 difere do produto BC e Alíquota [nItem: …] (vICMSOp …).

In English With ICMS CST 51, vICMSOp is not vBC × pICMS (R$ 0.01 tolerance).

error: the document is invalid

What the rule checks

As the rule set's publisher wrote it. The rule runs on every element the context matches, and fails where the test is false; the validator reports the line of that element.

SEFAZ authorisation rules of NF-e 4.00 MOC 7.0 Anexo I, NTs up to 2026.010
Context
nfe:infNFe/nfe:det
Test
$cst != '51' or br:product($icms/nfe:vICMSOp, br:dec($icms/nfe:vBC) * br:dec($icms/nfe:pICMS) div 100)

Checked with NF-e 4.00, NF-e 4.00 with authorisation protocol