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

# Errors

ilert uses HTTP response codes to indicate success or failure of an API request. Codes in the 2xx range indicate success, codes in the 4xx range indicate a client error (e.g. a missing required parameter) and codes in the 5xx range indicate an error with ilert's servers. In case of an error, the response body contains the following information:

| Attribute | Description                               |
| --------- | ----------------------------------------- |
| status    | the corresponsing HTTP status code        |
| message   | a human readable description of the error |
| code      | error code, used to identify error type   |


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# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.ilert.com/developer-docs/rest-api/api-reference/introduction/errors.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.