# Errors

> The LeadsPedia API uses standard HTTP status codes to indicate whether a request was successful or an error occurred.

## HTTP Status Codes
| Status Code | Description |
| --- | --- |
| **200 OK** | The request was processed successfully. |
| **400 Bad Request** | The request is invalid or contains missing or incorrect parameters. |
| **401 Unauthorized** | Authentication failed due to missing or invalid API credentials. |
| **403 Forbidden** | You do not have permission to access the requested resource. |
| **404 Not Found** | The requested resource or endpoint could not be found. |
| **405 Method Not Allowed** | The HTTP method is not supported for the requested endpoint. |
| **429 Too Many Requests** | The API rate limit has been exceeded. |
| **500 Internal Server Error** | An unexpected server error occurred. |
| **503 Service Unavailable** | The API is temporarily unavailable. |

## Handling Errors
When an API request fails, check the HTTP status code to identify the type of error.
- **4xx errors** — Review the request parameters and authentication credentials before retrying.
- **5xx errors** — The error occurred on the server. Retry the request after a short delay.
For rate limit errors (`429`), reduce the frequency of requests and retry after the applicable rate limit period.