Error Quantity of product "" cannot be less than or equal to 0, The currency of the product is not specified. How to get rid?

Question

1C-Bitrix

In attempts to set up sending additional goods to the basket, I added, then deleted, then I received errors.
But one error is now not removed and because of it new products are not added.

And it does not refer to any product. And the trash can't be emptied!
How to fix?

Answer 1

Try emptying the trash using the API.

CModule::IncludeModule("sale");
CSaleBasket::DeleteAll(CSaleBasket::GetBasketUserID());