unfulfilled order(The Soviet-built aircraft carrier Admiral Gorshkov, which is being refitted for the Indian navy, is four years behind schedule, and last year the shipyard was ordered to pay $43 million for breach of contract by a Stockholm arbitration court in relation to unfulfilled orders for a Norwegian company. TMT Alexander Demidov)
back order(An unfilled customer order or commitment. A back order is an immediate (or past due) demand against an item whose inventory is insufficient to satisfy the demand)
