on back order

on back order refers to a situation where a product is temporarily out of stock but is expected to be available in the future. When an item is on back order, it means that customers can still place an order for the item, but the shipping will be delayed until new stock is available. This can happen for various reasons, such as high demand or supply chain disruptions. It’s essential for businesses to communicate clearly with customers about back orders to manage expectations and avoid frustration.