# CFDI40181

Source: https://xmlvalid.com/rules/CFDI40181

> El valor del campo Base que corresponde a Retención debe ser mayor que cero.

- Level: error
- Rule sets: SAT validations of CFDI 4.0 and Pagos 2.0 Matrices of 25 March 2026 and Pagos 2.0 rev. B
- Context: `cfdi:Concepto/cfdi:Impuestos/cfdi:Retenciones/cfdi:Retencion`
- Test: `mx:dec(@Base) gt 0`

In English: The Base of a line's withholding must be more than zero.

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