# Simulate payment and Notification

### Create payment simulation

Create a test payment to make sure that the DOKU Checkout has been successfully integrated. Simply initiate the payment from your page and then make the payment from our Simulator.

* [Click here to access our payment simulator](https://sandbox.doku.com/integration/simulator/)

After the payment is completed, your customers will be redirected to `callback_url` that defined in the request.

### Acknowledge payment result <a href="#id-4-acknowledge-payment-result" id="id-4-acknowledge-payment-result"></a>

After the payment is being made by your customer, DOKU will send **HTTP Notification** to your defined `Notification URL`. Learn how to handle the notification from DOKU [here](/get-started-with-doku-api/notification.md).&#x20;


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