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

# Errors

We use [HTTP status codes](https://developer.mozilla.org/en-US/docs/Web/HTTP/Status) to communicate the result of a response. **2xx** responses are successful, **4xx** responses are failures due to provided information—e.g. a parameter was omitted or the bank credentials were invalid—and **5xx** responses are failures due to Fintoc errors or issues with the financial institution itself.