> For the complete documentation index, see [llms.txt](https://docs.bizon.one/08.01/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.bizon.one/08.01/api-payment-gateway/testing.md).

# Testing

Test payments are being processed via the test terminal. Please contact the support team for access to the test terminal.

While testing you can use any valid test card numbers, any valid date of expiration, CVV-code and cardholder name. The test terminal accepts all payments

with any valid credentials.

If you want to determine the way the test terminal responds, you can use some special card numbers:

| Card number      | Description                                         |
| ---------------- | --------------------------------------------------- |
| 4111111111111111 | Success authorization                               |
| 2222400060000007 | Success authorization                               |
| 4276990011343663 | Non 3-D Secure: declined authorization              |
|                  | 3-D Secure: “Unable to verify enrollment“ scenario. |
| 5555555555555599 | Internal system error                               |
| 4276838748917319 | 3-D Secure scenario “Not enrolled“                  |
| 4000000000000002 | Declined as fraud                                   |

<br>


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.bizon.one/08.01/api-payment-gateway/testing.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

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.