# Page Not Found

The URL `attaching-custom-client-invoices-for-legal-entities-for-the-ua-world-direction` does not exist. This page may have been moved, renamed, or deleted.

## Suggested Pages

You may be looking for one of the following:
- [Added custom invoice attachments for business shipments](https://api-portal.novapost.com/changelog-1/documentation/added-custom-invoice-attachments-for-business-shipments.md)
- [Offline reference guide for clients containing the list of settlements in Ukraine where shipment del](https://api-portal.novapost.com/changelog-1/documentation/offline-reference-guide-for-clients-containing-the-list-of-settlements-in-ukraine-where-shipment-del.md)
- [The method of calculating the cost of delivery](https://api-portal.novapost.com/changelog-1/documentation/the-method-of-calculating-the-cost-of-delivery-1.md)
- [Returning doc was deleted response for repeated deletion of a shipment](https://api-portal.novapost.com/changelog-1/documentation/returning-doc-was-deleted-response-for-repeated-deletion-of-a-shipment.md)
- [The method for obtaining a link to the online payment form](https://api-portal.novapost.com/changelog-1/documentation/the-method-for-obtaining-a-link-to-the-online-payment-form.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://api-portal.novapost.com/changelog-1/documentation/added-custom-invoice-attachments-for-business-shipments.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://api-portal.novapost.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://api-portal.novapost.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., `/changelog-1/documentation/added-custom-invoice-attachments-for-business-shipments.md`).

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