# Pre-autorización

- [Introducción](https://docs.payvalida.com/api-tarjeta/master/pre-autorizacion/introduccion.md)
- [Pre-Autorización](https://docs.payvalida.com/api-tarjeta/master/pre-autorizacion/pre-autorizacion.md): Se reserva un importe en la tarjeta del usuario. Posteriormente se debe confirmar el importe real de la transacción. Este importe puede ser igual, mayor, o menor que el monto pre-autorizado.
- [Completar pre-autorización](https://docs.payvalida.com/api-tarjeta/master/pre-autorizacion/completar-pre-autorizacion.md): Confirmar el importe real de la transacción pre-autorizada. Este importe puede ser igual, mayor, o menor que el monto pre-autorizado.


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Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.