# CRP20215

Source: https://xmlvalid.com/rules/CRP20215

> El campo TipoCambioP debe contener el valor "1".

- 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:Pagos/pago20:Pago`
- Test: `not($cur = 'MXN') or (@TipoCambioP and mx:dec(@TipoCambioP) = 1)`

In English: A payment in MXN must have TipoCambioP 1.

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