# HTTP Errors

## Status Codes

| Code    | Type           | Description           |
| ------- | -------------- | --------------------- |
| **200** | `Success`      | OK                    |
| **201** | `Success`      | Created               |
| **204** | `Success`      | No Content            |
| **304** | `Redirection`  | Not Modified          |
| **400** | `Client Error` | Bad Request           |
| **401** | `Client Error` | Unauthorized          |
| **403** | `Client Error` | Forbidden             |
| **404** | `Client Error` | Not Found             |
| **409** | `Client Error` | Conflict              |
| **429** | `Client Error` | Too Many Requests     |
| **500** | `Server Error` | Internal Server Error |

In the case of an error code, the response body will indicate further details to help troubleshoot the error.

```json
{
    "error": {
        "title": "ValidationError",
        "message": "campaign_id parameter is required" 
    }
}
```

## Rate Limiting

To prevent misuse, our API endpoints implement rate limiting.  If your application exceeds this limit then a HTTP **429 "Too Many Requests"** response code will be returned.

HTTP headers are returned on all endpoints which contain how many more requests your application is allowed.

| Header                   | Description                             |
| ------------------------ | --------------------------------------- |
| `x-rate-limit-limit`     | The rate limit for a given endpoint     |
| `x-rate-limit-remaining` | The number of requests remaining        |
| `x-rate-limit-reset`     | The time at which the rate limit resets |

{% hint style="info" %}
If you require a rate limit increase, please reach out to **<support@heypoplar.com>**
{% endhint %}


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