diff --git a/src/polymarket/rfq.py b/src/polymarket/rfq.py
index 237c182..d94118c 100644
--- a/src/polymarket/rfq.py
+++ b/src/polymarket/rfq.py
@@ -50,6 +50,8 @@ class RfqExecutionStatus(StrEnum):
 
 class RfqErrorCode(StrEnum):
     ADDRESS_MISMATCH = "ADDRESS_MISMATCH"
+    ALLOWANCE_VALIDATION_FAILED = "ALLOWANCE_VALIDATION_FAILED"
+    BALANCE_VALIDATION_FAILED = "BALANCE_VALIDATION_FAILED"
     CONTRADICTORY_LEGS = "CONTRADICTORY_LEGS"
     EXPIRED_RFQ = "EXPIRED_RFQ"
     INVALID_ACCEPTANCE = "INVALID_ACCEPTANCE"
@@ -64,6 +66,7 @@ class RfqErrorCode(StrEnum):
     LEG_METADATA_UNAVAILABLE = "LEG_METADATA_UNAVAILABLE"
     MAKER_ALREADY_RESPONDED = "MAKER_ALREADY_RESPONDED"
     MAKER_NOT_REQUIRED = "MAKER_NOT_REQUIRED"
+    PRE_EXECUTION_BALANCE_RESERVATION_FAILED = "PRE_EXECUTION_BALANCE_RESERVATION_FAILED"
     QUOTE_MISMATCH = "QUOTE_MISMATCH"
     QUOTE_UNAVAILABLE = "QUOTE_UNAVAILABLE"
     RATE_LIMITED = "RATE_LIMITED"
diff --git a/tests/integration/test_rfq.py b/tests/integration/test_rfq.py
index a462a9e..02af98d 100644
--- a/tests/integration/test_rfq.py
+++ b/tests/integration/test_rfq.py
@@ -14,6 +14,7 @@
 from polymarket.errors import TransportError, UnexpectedResponseError
 from polymarket.rfq import (
     RfqConfirmationRequestEvent,
+    RfqErrorCode,
     RfqExecutionStatus,
     RfqQuoteRejectedError,
     RfqQuoteRequestEvent,
@@ -363,8 +364,17 @@ async def handler(ws: ServerConnection) -> None:
 
 
 @pytest.mark.integration
+@pytest.mark.parametrize(
+    "code",
+    [
+        RfqErrorCode.ALLOWANCE_VALIDATION_FAILED,
+        RfqErrorCode.BALANCE_VALIDATION_FAILED,
+        RfqErrorCode.PRE_EXECUTION_BALANCE_RESERVATION_FAILED,
+    ],
+)
 async def test_rfq_session_quote_rejection_raises_typed_error(
     require_env: Callable[[str], str],
+    code: RfqErrorCode,
 ) -> None:
     async def handler(ws: ServerConnection) -> None:
         async for raw in ws:
@@ -380,7 +390,7 @@ async def handler(ws: ServerConnection) -> None:
                             "type": "RFQ_ERROR",
                             "request_type": "RFQ_QUOTE",
                             "rfq_id": RFQ_ID,
-                            "code": "INVALID_QUOTE",
+                            "code": code,
                             "error": "quote rejected",
                         }
                     )
@@ -393,8 +403,9 @@ async def handler(ws: ServerConnection) -> None:
     ):
         async for event in session:
             assert isinstance(event, RfqQuoteRequestEvent)
-            with pytest.raises(RfqQuoteRejectedError, match="quote rejected"):
+            with pytest.raises(RfqQuoteRejectedError, match="quote rejected") as exc_info:
                 await event.quote(price=Decimal("0.45"))
+            assert exc_info.value.code == code
             break