Русско-англо-русский юридический словарь

If something is on order, you have asked for it but have not yet received it (English Cambridge Dictionary)

Under the contract for construction work, the contractor is obligated in the period established by the contract to construct on order of the customer a defined object or to perform other construction works ... (Перевод на английский статьи 740 ГК РФ, выполненный П. Б. Мэггсом (Peter Maggs) при участии А. Н. Жильцова)