How to combine products in the Bitrix cart with different price XML_IDs?

Question

1C-Bitrix

Good afternoon!
An item is added to the cart using the class
Basket::add($id, $quantity, $xmlid);
, where $id is the item's ID,
$quantity is its quantity, and
$xmlid is the XML_ID of the item's price, and is passed to the cart as a property of the item.

The product arrives in the basket in such a way that one product with different types of prices is 2 different products

. Can you please tell me how they can be combined into one?
Thanks in advance!

Answer 1

solved the problem using the standard Bitrix CSaleBasket::Add