In 2026, the most common roadblock for algorithmic traders on Binance is still the Error -1013. You’ve coded your strategy, your logic is sound, but your terminal is screaming: APIError(code=-1013): Filter failure: MIN_NOTIONAL.
This error isn’t a bug in your code; it’s a breach of Binance’s Trading Rules. Here is how to fix it permanently.
1. What does -1013 Actually Mean?
Binance uses “Filters” to ensure market liquidity and prevent order book spam.
- MIN_NOTIONAL: The total value of your order (Price x Quantity) is too small. For most pairs, this is 5 USDT or 10 USDT.
- LOT_SIZE: Your Quantity has too many decimal places or is below the minimum allowed step size.
2. The Python (CCXT) Fix
Don’t hardcode your order sizes. Your bot must dynamically fetch the exchangeInfo before placing an order.
3. Why am I still getting -1013 on Stop-Loss/Take-Profit?
This is the “Pro’s Trap.” If you are using Price Protection or placing orders during high volatility, the price might slip between the time you calculate the value and the time the order hits the engine. Always add a 5% buffer to your MIN_NOTIONAL calculations to ensure execution.