1c-Bitrix 24 (IM + CRM) How to add product properties (article) to order documents?

Question

1C-Bitrix

Tell me, please, how to add a product article to documents in 1s-Bitrix 24 (IM + CRM) or print documents that were created in site management. (The client had a website on the business, they created the necessary documents and pulled up the article of the goods, now they bought the transition. It is important that the documents contain the article of the goods)