# Notificaciones de callback

Las notificaciones de callback se utilizan para informar a los comerciantes sobre cambios en el estado del pago. La notificación solo se envía cuando la URL de callback está configurada en la configuración de la tienda.

Cuando se recibe el callback, puede llamar al [obtener información del pago](/documentation-es/referencias-de-la-api/api-para-comerciantes/pagos.md#get-egw-version-payments-paymentid) endpoint para recibir detalles actualizados sobre el pago. No se espera ningún cuerpo de respuesta en respuesta a las notificaciones.

Si no se entrega la notificación, se activarán reintentos con un retraso creciente: después de 1 segundo, 5 minutos, 1 hora, 1 día, 2 días, 3 días. Si todos los intentos de reintento no tienen éxito, no se realizarán más solicitudes.

## Callback notification

> Notifies the merchant about payment status changes.

```json
{"openapi":"3.1.0","info":{"title":"E-commerce Gateway Callback API","version":"1.0.0"},"servers":[{"url":"https://hostname"}],"paths":{"/":{"post":{"summary":"Callback notification","description":"Notifies the merchant about payment status changes.","operationId":"callbackNotification","parameters":[{"name":"X-Request-Id","in":"header","description":"ID of the request, unique to the call, as determined by the initiating party","required":true,"schema":{"type":"string","format":"uuid","description":"ID of the request, unique to the call, as determined by the initiating party"}}],"requestBody":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/CallbackRequest"}}},"required":true},"responses":{"2XX":{"description":"Notification received.\n\nAny other response code will be treated as a failure and the notification will be retried at a later time.\n"}}}}},"components":{"schemas":{"CallbackRequest":{"type":"object","properties":{"type":{"type":"string","description":"The type of the notification, possible values:\n  * PAYMENT - notification about payment status changes\n","enum":["PAYMENT"]},"paymentId":{"type":"string","description":"Unique ID of the payment","maxLength":64},"paymentStatus":{"type":"string","description":"The new status of the payment","enum":["SENT_FOR_PROCESSING","ABANDONED","AUTHORIZED","CAPTURED","CANCELLED","SETTLED","FAILED","REFUNDED"]}},"required":["type"]}}}}
```


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