---
title: "Error Messages"
description: "400 status messages."
url: "https://developer-beta.morningstar.com/authentication-api/error-messages"
image: "https://developer-beta.morningstar.com/_og/d/c_Ocean.takumi,title_~RXJyb3IgTWVzc2FnZXN8IEF1dGhlbnRpY2F0aW9uIEFQSQ,description_400+status+messages.,props_eyJ0aGVtZSI6eyJtb2RlIjoibGlnaHQiLCJjb2xvcnMiOnsicHJpbWFyeSI6IiMwMDAwMDAifX19,p_Ii9hdXRoZW50aWNhdGlvbi1hcGkvZXJyb3ItbWVzc2FnZXMi,s_dYa5j0w6BSB92cNq.png"
---

-   [APIs](https://developer-beta.morningstar.com/apis)
-   [API Catalog](https://developer-beta.morningstar.com/api-catalog)
-   [API Assistant MCP Server](https://developer-beta.morningstar.com/api-assistant-mcp)
-   [Guides](https://developer-beta.morningstar.com/api-guides)
-   [Trial Access](https://developer-beta.morningstar.com/trial-access)

# Authentication API

Generate access tokens that authorize API calls.

# Error Messages

[View Markdown](https://developer-beta.morningstar.com/authentication-api/error-messages.md)[Download Markdown](https://developer-beta.morningstar.com/authentication-api/error-messages.md)

This page lists the error messages returned by the Authentication API.

TBC