> For the complete documentation index, see [llms.txt](https://developers.doku.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers.doku.com/accept-payments/doku-checkout/integration-guide/simulate-payment-and-notification.md).

# 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;