How to set a permanent path to files in Bitrix?

Question

Search Engine Optimization

Hello!
There are a couple of sites on Bitrix where it is possible to upload files to a product card (or to an article), and so from the public part for a file a different link to the same file is generated, the same file to different products, etc., but the links different types are generated: /upload/iblock/100/......pdf
Yandex constantly adds and deletes these files (as duplicates) and so on in a circle. Is it possible to somehow set a static path for downloading? note: domen.ru/promo/file.pdf

There was an idea to remove the section with files from the index through robots, but these PDFs are just as important for indexing (They have valuable information)

Answer 1

1. option you attach the file data in the content, and put them in the file structure.
2. the files are the same and Yandex does it right, attach your instructions to each product, if it is the same product only the difference in price, color, etc., small properties, then this is Not product A "SKU trade offer" and This product has only one link .
3. the mythical version is not a SKU, but it is the same product, you have to twist and stir up here, since Bitrix does not steam URLs to media materials and generates different links for them, and even when importing goods from 1c, it will be the same product each time give different urls for images (when fully loaded).
4. a link to the site.
5. prohibit the index of such files in principle
6. do not bathe at all.