API Error [-4164]: Order's notional must be no smaller than 20 (unless you choose reduce only).怎么解决

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API Error [-4164]: Order's notional must be no smaller than 20 (unless you choose reduce only).
❌ Order execution failed: Binance API Error: Order's notional must be no smaller than 20 (unless you choose reduce only).
❌ Failed to close position: ETHUSDT - Binance API Error: Order's notional must be no smaller than 20 (unless you choose reduce only).