> ## Documentation Index
> Fetch the complete documentation index at: https://developers.pleo.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Errors

<Info>
  🚧 This page refers to the Legacy API which is deprecated
</Info>

## Error Handling & Responses

Pleo uses conventional HTTP response codes to indicate the success or failure of an API request. In general: Codes in the 2xx range indicate success. Codes in the 4xx range indicate an error that failed given the information provided (e.g., a required parameter was omitted, a charge failed, etc.). Codes in the 5xx range indicate an error with Pleo's servers (these are rare).

Some 4xx errors that could be handled programmatically - include an error code that briefly explains the error reported.

| Error code | Description of error code                                 |
| :--------- | :-------------------------------------------------------- |
| 200        | All good, everything went as expected!                    |
| 401        | Unauthorised - No valid Token has been provided           |
| 403        | Forbidden - The Token does not have sufficient permission |
| 404        | The requested resource does not exist                     |
| 500        | Internal server error                                     |