NFE-337
Rejeição: CFOP inválido para emitente MEI (CRT=4) [nItem: …] (CFOP …).
In English An MEI issuer (CRT 4) with the DANFE Simplificado Tipo 2 may only use CFOP 5102.
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.
nfe:infNFe/nfe:det
not($simple and $crt = '4' and $idDest != '3') or $cfop = '5102'
Checked with NF-e 4.00, NF-e 4.00 with authorisation protocol