what is a backorder item What is a backorder item refers to a product that is temporarily out of stock but can still be ordered by customers, with delivery scheduled once inventory is replenished. Backorders are common in high-demand or limited-supply situations, and businesses use them to secure future sales and manage customer expectations. Ecommerce platforms notify buyers of estimated restock dates and may offer alternative products. Proper backorder management improves inventory planning, reduces lost sales, and keeps the customer relationship active during supply delays.