CFDI40206
Debe existir el campo TotalImpuestosRetenidos.
In English A tax summary with Retenciones must have TotalImpuestosRetenidos.
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.
Context
/cfdi:Comprobante/cfdi:Impuestos
Test
not(cfdi:Retenciones) or @TotalImpuestosRetenidos
Checked with CFDI 4.0