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

# Errors

The One Codex API communicates errors with [standard HTTP status codes](http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html) with details supplied in JSON objects. The following general pattern applies:

**2XX**: We received, processed, and accepted a request.

**3XX**: More action is required in order to complete the request. We use redirects sparingly.

**4XX**: Client error. Common errors relate to invalid parameters or our inability to find and serve the requested resource.

**5XX**: Server error. An error occurred on our system(s) while handling the request.

## HTTP Status Codes

<CodeGroup>
  ```text Codes theme={null}
  200 success
  201 created
  202 accepted
  204 no_content
  302 redirect
  304 not_modified
  400 bad_request
  401 unauthorized
  403 forbidden
  404 not_found
  405 method_not_allowed
  409 conflict
  412 precondition_failed
  429 too_many_requests
  500 internal_server_error
  503 unavailable
  ```
</CodeGroup>

## Error Response

| Field              | Description                                                  |
| ------------------ | ------------------------------------------------------------ |
| **Message** string | An error message detailing why the request was unsuccessful. |
| **Status** integer | HTTP status code                                             |

**EXAMPLE ERROR**

<CodeGroup>
  ```json json theme={null}
  {
      "message": "The server could not verify that you are authorized to access the URL requested.  You either supplied the wrong credentials...",
      "status": 401
  }
  ```
</CodeGroup>