# CRP20263

Source: https://xmlvalid.com/rules/CRP20263

> Debe haber sólo un registro por cada tipo de impuesto retenido (…).

- 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: `pago20:ImpuestosP/pago20:RetencionesP/pago20:RetencionP`
- Test: `count(../pago20:RetencionP[@ImpuestoP = $tax]) = 1`

In English: A payment has one RetencionP per tax.

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