After a partial close, the quantity mismatch in your stop-loss/take-profit orders usually occurs because those orders were originally set for the full position. When you manually close part of the position, the system does not automatically scale down the old stop-loss or take-profit orders proportionally—they may still reference a position size that no longer exists or has changed.
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1. Understand the Root Cause of the Quantity Mismatch
On Binance Futures, once triggered, a stop-loss or take-profit order acts on your entire position, not just a part of it. When you manually close a portion of the position, the existing stop-loss and take-profit orders do not automatically "split" or adjust their quantity. They remain in place but now target a smaller remaining position, leading to a quantity mismatch, or the order may become invalid because its quantity exceeds the current position size.
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2. How to Reset: Cancel Old Orders First, Then Place New Ones
Step 1: Cancel All Existing Stop-Loss/Take-Profit Orders
What to do: In the [Open Orders] tab, cancel every remaining stop-loss and take-profit order for that trading pair.
How to do it:
On the Futures trading interface, click [Open Orders] and filter for your current trading pair.
Find all stop-loss/take-profit orders in "Active" status, and cancel them one by one, or use the "Cancel All" button.
Case A (for API users): If your program does not clean up residual orders after a position close, stop-loss/take-profit orders can pile up. Make sure your code calls CancelAllOrders(symbol) to clear all remaining orders for that symbol when a full position close is detected.
Done when: No old stop-loss or take-profit orders remain in the [Open Orders] list for that trading pair.
Step 2: Set New Stop-Loss/Take-Profit Orders for the Remaining Position
What to do: Create new stop-loss/take-profit orders based on your current remaining position size.
How to do it:
In the [Positions] panel, locate your remaining position.
Click the [Add] button in the Stop-Loss/Take-Profit column.
The system will default to your entire remaining position for the order quantity. Unless you intend to close only part of the remaining position, do not adjust the quantity manually.
Set your desired trigger price and order price.
Done when: The new stop-loss/take-profit orders appear in [Open Orders], and their quantity matches your remaining position size exactly.
Prerequisites: You already hold a position on Binance Futures, had previously set stop-loss/take-profit orders, and have now manually closed part of that position.
Common reason for failure: During a partial close, if the system detects that a residual stop-loss/take-profit order quantity exceeds the current position size, the order may be automatically canceled or fail to trigger. If you expected the stop-loss/take-profit orders to automatically scale down after a partial close, remember that Binance currently does not support this "proportional scaling" logic; manual reset is necessary.
Risk warning: If old orders are not properly cleaned up, they may trigger unexpectedly during sharp market movements and close a larger quantity than you intended. Therefore, after any partial close, your first action should be to check your Open Orders and clear out the old ones.
How to verify the reset is successful
Go to the [Open Orders] page and confirm three things: ① Old orders are gone; ② The trigger price and limit price of the new orders match your expectations; ③ The new order quantities exactly match your current position size. Once all three are confirmed, the new stop-loss/take-profit mechanism is in effect.
