# CRP20115

Source: https://xmlvalid.com/rules/CRP20115

> El valor del campo Cantidad debe ser "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: `/cfdi:Comprobante[@TipoDeComprobante = 'P']/cfdi:Conceptos/cfdi:Concepto`
- Test: `mx:dec(@Cantidad) = 1`

In English: The Concepto of a payment receipt has Cantidad 1.

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