If you are working on a Drupal website with Ubercart and if you are handling custom product mechanisms programmatically, one of the main task you may come across can be, 'removing an item from your cart', when a particular condition is satisfied. If you are facing any difficulty with removing items from cart, I may have a solution for you.
By default Ubercart provides custom function named uc_cart_remove_item() to remove an item.
uc_cart_remove_item(node_id, cart_id, product_data)As you can see that the function requires three parameters: