There may be three reasons: first, because the closing direction is wrong, the closing and opening positions are in opposite directions. Second, because you have hung the liquidation order in the entrustment order, but you have not made a deal yet. The customer must first withdraw the unfinished liquidation order, and then re-hang the liquidation order. Third, because the closing type is wrong. There is a difference between "liquidation" and "liquidation". If it is a contract of Shanghai Futures Exchange, you must choose "Closing" when opening warehouse receipts on the same day. There is no difference between the other three exchanges, and you can choose "liquidation".