---
title: Response Codes
description: "The Lucidum API v2 can return the following response codes: | **Response Code** | **Description** | | --- | --- | | 200 | Successful request | | 201 | Created | | 400 | Bad request | | 401…"
url: "https://lucidum.io/docs/response-codes/"
updated: "2024-07-15"
category: Meridian API v2
---

# Response Codes

The Lucidum API v2 can return the following response codes:

| **Response Code** | **Description** |
| --- | --- |
| 200 | Successful request |
| 201 | Created |
| 400 | Bad request |
| 401 | Unauthorized |
| 403 | Forbidden |
| 404 | Not Found |
| 400001 | Invalid numeric operator |
| 400002 | Invalid string operator |
| 400003 | Invalid Boolean operator |
| 400004 | Invalid list operator |
| 400005 | Invalid data operator |
| 400006 | Invalid page number |
| 400007 | Invalid item per page |
| 401001 | Invalid token |
| 401002 | Invalid collection name |
| 401003 | Invalid output field |