How to apply a discount coupon to an order in Bitrix in Bitrix?

Question

1C-Bitrix

I created an order and applied a discount coupon.
I create an order using the method CSaleOrder::Add($arFields);
After I make a binding

CSaleBasket::OrderBasket($ORDER_ID, $basket_user_id, SITE_ID); CSaleBasket::DeleteAll($basket_user_id, False);

And after binding, the discount is not applied to the order. What can be wrong?
I am attaching screenshots from the admin panel.


The screenshots show that the discount was first applied and then removed, as I checked because of the CSaleBasket::OrderBasket($ORDER_ID, $basket_user_id, SITE_ID);