# Error Codes

## Overview

The parcelLab API uses standard HTTP status codes to indicate whether a request was successful or not. In case of an error, the response body will contain details of the error (for example: `401 Unauthorized – No valid credentials given`).

## HTTP Status Codes <a href="#id-401-unauthorized" id="id-401-unauthorized"></a>

When you make an API call, receiving a 2xx response (for example: 200 OK) would indicate that the client’s request was successfully received, understood, and processed by the server.

For a failed API request, error codes are categorized into different groups to indicate specific issues encountered during the request process:

* 4xx client errors - these codes indicate issues with the client's request (for example: incorrect parameters or unauthorized access)
* 5xx server errors - these codes indicate that the server failed to process the request

## Error Code Examples <a href="#id-401-unauthorized" id="id-401-unauthorized"></a>

Some example error codes are described in the following table.

<table><thead><tr><th width="132.21875">Status Code</th><th width="197.0859375">Error</th><th>Description</th></tr></thead><tbody><tr><td>400</td><td>Bad Request</td><td>This is returned when there is an issue with the information provided in the request, often due to incorrect format or missing required parameters/fields.</td></tr><tr><td>401</td><td>Unauthorized</td><td>This is returned when the authentication fails or the authentication information is not provided as part of the request.</td></tr><tr><td>403</td><td>Forbidden</td><td>This is returned when the client does not have the rights to perform the request.</td></tr><tr><td>404</td><td>Not Found</td><td>This is returned when the requested resource cannot be found.</td></tr><tr><td>405</td><td>Method Not Allowed</td><td>This is returned when an endpoint is called with an unexpected HTTP method.</td></tr><tr><td>500</td><td>Internal Server Error</td><td>This is returned when the API server encounters an unexpected error.</td></tr></tbody></table>


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