> For the complete documentation index, see [llms.txt](https://docs.payments.thalescloud.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.payments.thalescloud.io/release-notes/es/backend/readme/mar-4.md).

# 4 mar

| Entorno       | Fecha       |
| ------------- | ----------- |
| Preproducción | 25 feb 2026 |
| Producción    | 4 mar 2026  |

### Tokenización del comerciante

#### Mejoras

* Actualizar los flujos de vinculación de dispositivos de Mastercard para enviar `flowId` en las llamadas del SDK D1.
* Mejorar el mapeo de errores para los errores de red de pago de Visa y Mastercard de tarjeta en archivo (COF).
  * Devolver HTTP `400` cuando el error provenga de la red de pago.
  * Agregar `schemeCorrelationId` a las respuestas para la resolución de problemas.
* Actualizar el valor predeterminado de `mcServiceId` devueltos en Sandbox para la incorporación SCOF de Mastercard.


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