update redemption transaction match rules

Author: codereverser

casparser/process/cas_detailed.py

@@ -98,7 +98,9 @@ def get_transaction_type(
         else:
             txn_type = TransactionType.PURCHASE
     elif units < 0:
-        if re.search("reversal|rejection|dishonoured|mismatch", description, re.I):
+        if re.search(
+            "reversal|rejection|dishonoured|mismatch|insufficient\s+balance", description, re.I
+        ):
             txn_type = TransactionType.REVERSAL
         elif "switch" in description:
             if "merger" in description: