Don't start futures backtest if leverage-tiers don't contain pair

freqtrade/optimize/backtesting.py

@@ -269,10 +269,18 @@ class Backtesting:
                 candle_type=CandleType.from_string(self.exchange._ft_has["mark_ohlcv_price"])
             )
             # Combine data to avoid combining the data per trade.
+            unavailable_pairs = []
             for pair in self.pairlists.whitelist:
+                if pair not in self.exchange._leverage_tiers:
+                    unavailable_pairs.append(pair)
+                    continue
                 self.futures_data[pair] = funding_rates_dict[pair].merge(
                     mark_rates_dict[pair], on='date', how="inner", suffixes=["_fund", "_mark"])
 
+            if unavailable_pairs:
+                raise OperationalException(
+                        f"Pairs {', '.join(unavailable_pairs)} got no leverage tiers available. "
+                        "It is therefore impossible to backtest with this pair at the moment.")
         else:
             self.futures_data = {}