> For the complete documentation index, see [llms.txt](https://faq.finerymarkets.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://faq.finerymarkets.com/api-reference/troubleshooting-errors/error-3.md).

# Error 3

Error 3 Not authorised may occur when used API key doesn't have permissions to perform a request.

Check your API key permissions. There are three options:

* Read-only
* Trading allowed
* Settlements allowed

Generate another API key with required permissions.