# Page Not Found

The URL `article/27-gebruik-structurele-vermeldingen-voor-de-betaling-van-uw-facturen` does not exist. This page may have been moved, renamed, or deleted.

## Suggested Pages

You may be looking for one of the following:
- [Aangepaste velden bij contacten](https://documentatie.onfact.be/instellingen/aangepaste-velden-bij-contacten.md)
- [Gebruik van templates in onFact](https://documentatie.onfact.be/templates/gebruik-van-templates-in-onfact.md)
- [QR-code op facturen](https://documentatie.onfact.be/betalingen/qr-code-op-facturen.md)
- [Wettelijke vermeldingen](https://documentatie.onfact.be/instellingen/wettelijke-vermeldingen.md)
- [Hoe verander ik de standaard volgorde van mijn templates?](https://documentatie.onfact.be/templates/gebruik-van-templates-in-onfact/hoe-verander-ik-de-standaard-volgorde-van-mijn-templates.md)

## How to find the correct page

If the exact page cannot be found, you can still retrieve the information using the documentation query interface.

### Option 1 — Ask a question (recommended)

Perform an HTTP GET request on the documentation index with the `ask` parameter:

```
GET https://documentatie.onfact.be/instellingen/aangepaste-velden-bij-contacten.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

### Option 2 — Browse the documentation index

Full index: https://documentatie.onfact.be/sitemap.md

Use this to discover valid page paths or navigate the documentation structure.

### Option 3 — Retrieve the full documentation corpus

Full export: https://documentatie.onfact.be/llms-full.txt

Use this to access all content at once and perform your own parsing or retrieval. It will be more expensive.

## Tips for requesting documentation

Prefer `.md` URLs for structured content, append `.md` to URLs (e.g., `/instellingen/aangepaste-velden-bij-contacten.md`).

You may also use `Accept: text/markdown` header for content negotiation.