How to add a product property to the order in the Bitrix admin panel?

Question

1C-Bitrix

On this page in the admin panel , the product has "properties". Internet example. Where do these properties come from? How to add?
I tried adding additional fields when calling the sale.order.ajax component - it doesn't help.

Answer 1

In the order, only those properties that are added to the basket along with the product are displayed.
In the settings of the complex component, you can specify which properties to pass to the cart when "adding an item to the cart".
If not a complex component is used, but an API, then the $arProps = array() array in CSaleBasket::Add is responsible for the properties

Answer 2

Read about the SKU
Properties of the product in this case, these are the properties of trade offers
. There are 2 infoblocks, one with the product, and the second with trade offers, in the 2nd one, additional properties are added.