> For the complete documentation index, see [llms.txt](https://docs.iyzico.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.iyzico.com/en/getting-started/preliminaries/limiters.md).

# Limiters

iyzico rate limiters, from a fintech perspective, play a crucial role in maintaining the security, reliability, and stability of financial services provided through HTTP-based APIs.

### Fundamental Rate Limiters Table

Table below represents list of essentials services

| Method                  | Limit | Time Frame |
| ----------------------- | ----- | ---------- |
| initialize Payment      | 50    | per Minute |
| retrieve Payment Result | 50    | per Minute |
| initialize HPP          | 100   | per Minute |
| retrieve HPP Result     | 100   | per Minute |
| refund                  | 50    | per Minute |
| cancel                  | 50    | per Minute |

{% hint style="info" %}
In case you exceed the limit, the response message will be as below:
{% endhint %}

```http
curl -X POST "BASE_URL" \
     -H "Content-Type: application/json" \
     -d '{
           "status": "failure",
           "errorCode": 50000,
           "errorMessage": "Request Limit Exceeded",
           "locale": "en"
         }'

```