---
title: "Common HTTP status codes | Veriff.com"
slug: "common-http-status-codes"
description: "Learn about common HTTP status codes, their meanings, and how they impact website performance. A quick guide to the most frequently used codes."
updated: 2025-02-25T13:33:25Z
published: 2025-02-25T13:33:25Z
---

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

# Common HTTP status codes (table)

These codes are returned in `status` string in API calls.

| Code | Description in `status` | Why could you be seeing this code? |
| --- | --- | --- |
| 200 | `success` `data` | "OK", returned as a general success code |
| 201 | `created` `data` | “Created”, returned when session creation was a success |
| 400 | `fail` | “Bad request”, returned when the server deems that something is incorrect on the client side. Check the payload for additional [troubleshooting codes](/v1/docs/some-troubleshooting-codes-table) to understand the issue |
| 401 | `fail` | “Unauthorized”, returned when there is an issue with user authentication |
| 404 | `fail` | “Not found” |
| 500 | `fail` | “Internal server error”, a generic error message, returned when something went wrong |