Today, two conditional empty orders #SUIUSDT were rejected. After some exploration, I finally understood the reason: Binance has set a maximum nominal value limit based on leverage for each contract (such as SUIUSDT), which is related to account level or other factors, to control risk. For example, the maximum nominal value for SUIUSDT at 75x leverage is 20000u, and my position and the take-profit order I set together exceed 20000u, so under the current leverage, I cannot place a new order.