BYDFi Trading Voucher FAQ

To help users better understand how Trading Vouchers work—and avoid common binding or withdrawal issues—we’ve compiled the following FAQ.

This guide will help you quickly grasp voucher binding conditions, withdrawal criteria, expiration rules, and various exceptional situations, ensuring a smoother experience when using Trading Vouchers in USDⓈ-M Futures trading.

1. I have a Trading Voucher and my opening margin meets the requirement. Why can’t I select the voucher?

Possible reasons:

• Your Bonus balance exceeds the allowable range, and the current position mode supports using Bonus, making the voucher unavailable.
• There is already an open position in the same trading pair, which does not meet the “new position” requirement.
• The voucher has already been successfully bound to another position.

2. Why was my voucher bound to the order initially, but not bound after the order was filled?

At the moment the order is filled, the system re-checks whether a position already exists.

If a position is detected, the voucher binding becomes invalid.

3. Why did my market order fail to bind the voucher even though I selected it before placing the order?

Possible reasons:

• At the moment of execution, the system detected an existing position → voucher binding becomes invalid.
• Market volatility caused the actual opening margin to fall below the voucher value, making the order ineligible for binding.

4. Why can't I use a USDC voucher on a USDT contract?

• USDC vouchers → Only for USDC contracts
• USDT vouchers → Only for USDT contracts

5. I’ve reached 3× profit, but the system says I haven’t met the withdrawal requirement. Why?

The profit multiplier is calculated using total initial margin across all opening entries, including any added margin.

Example:

• Initial opening margin: 110U
• Added margin: 100U
• Total margin = 210U Required profit = 3 × 210U = 630U

6. My position's current margin is only 10U, but I already earned 35U. Why can’t I withdraw?

Profit requirements are based on the initial margin at the time of opening, not the latest margin after funding/fee deductions.

Example:

• Isolated ETHUSDT, size 0.1, price 3000, 10× leverage
• Initial margin = 30U Even if the margin later drops to 10U due to fees, withdrawal requirement = 3 × 30U = 90U, not based on the new margin.

Cross mode follows the same logic.

7. All conditions are met—why can't my order bind the voucher?

Possible reasons:

Manual Binding Mode:

• Orders using vouchers are submitted as FOK (Fill-or-Kill).
• If FOK cannot fully execute → the order is canceled → voucher cannot bind.

Auto Bind Mode:

• System still attempts FOK execution.
• If FOK succeeds → voucher binds successfully.
• If FOK fails → the order becomes a normal limit order in the order book, but cannot bind a voucher.

8. Why can’t I bind a voucher when opening a inverse position?

• If Auto-Binding is enabled → voucher will bind if all conditions are met.
• If Manual Binding is enabled → inverse orders will never bind vouchers, even if eligible.

9. Why does my voucher show “Canceled” after I cancel an order?

Because the voucher was bound to that order. When you cancel the order, the voucher binding is also canceled and can be bind to other position.

10. Why does my position remain open after the voucher expires?

Voucher expiration only removes the voucher itself. It does not affect your position, which continues to operate normally.