Hi, I was taking about the “side cart”, not the actual cart page. I was told by my developer that the side cart was a theme feature and not a WooCommerce feature, so the notification alert when an item is no longer available after someone already added an item to their side cart (not cart page), should be connected to the theme. Are you saying that such “side cart” notification is a WooCommerce thing? Please see screenshot of the side cart I was referring to.