# Page Not Found

The URL `files/Cf5vDLfmJdVAKeZtS08y` does not exist. This page may have been moved, renamed, or deleted.

## Suggested Pages

You may be looking for one of the following:
- [Custom Field - Payment Link](https://changelog.doku.com/august-2024/custom-field-payment-link.md)
- [Checkout - New Fields and Status Values on Check Status API](https://changelog.doku.com/july-2025/checkout-new-fields-and-status-values-on-check-status-api.md)
- [Refund Service - Passcode Authentication](https://changelog.doku.com/november-2025/refund-service-passcode-authentication.md)
- [Dashboard - New Settlement Settings](https://changelog.doku.com/october-2024/dashboard-new-settlement-settings.md)
- [Whitelist Domain - DOKU Checkout](https://changelog.doku.com/june-2024/whitelist-domain-doku-checkout.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://changelog.doku.com/august-2024/custom-field-payment-link.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://changelog.doku.com/sitemap.md

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

### Option 3 — Retrieve the full documentation corpus

Full export: https://changelog.doku.com/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., `/august-2024/custom-field-payment-link.md`).

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