diff --git a/src/rune/runtime/base_data_class.py b/src/rune/runtime/base_data_class.py
index cbf3d3a..5e794e8 100644
--- a/src/rune/runtime/base_data_class.py
+++ b/src/rune/runtime/base_data_class.py
@@ -72,6 +72,7 @@ def rune_serialize(
         self,
         *,
         validate_model: bool = True,
+        check_rune_constraints: bool = True,
         strict: bool = True,
         raise_validation_errors: bool = True,
         indent: int | None = None,
@@ -92,6 +93,10 @@ def rune_serialize(
             serialization. It checks also all Rune type constraints.
             Defaults to True.
 
+            `check_rune_constraints (bool, optional):` If `validate_model` is
+            set to `True`, executes all model defined Rune constraints after
+            deserialization. Defaults to True.
+
             `strict (bool, optional):` Perform strict attribute validation. 
             Defaults to True.
 
@@ -134,8 +139,10 @@ def rune_serialize(
         '''
         try:
             if validate_model:
-                self.validate_model(strict=strict,
-                                    raise_exc=raise_validation_errors)
+                self.validate_model(
+                    check_rune_constraints=check_rune_constraints,
+                    strict=strict,
+                    raise_exc=raise_validation_errors)
 
             root_meta = self.__dict__.setdefault(ROOT_CONTAINER, {})
             root_meta['@type'] = self._FQRTN
@@ -159,6 +166,7 @@ def rune_serialize(
     def rune_deserialize(cls,
                          rune_json: str,
                          validate_model: bool = True,
+                         check_rune_constraints: bool = True,
                          strict: bool = True,
                          raise_validation_errors: bool = True) -> BaseModel:
         # pylint: disable=line-too-long
@@ -171,6 +179,10 @@ def rune_deserialize(cls,
             deserialization. It checks also all Rune type constraints. Defaults
             to True.
 
+            `check_rune_constraints (bool, optional):` If `validate_model` is
+            set to `True`, executes all model defined Rune constraints after
+            deserialization. Defaults to True.
+
             `strict (bool, optional):` Perform strict attribute validation.
             Defaults to True.
 
@@ -186,7 +198,8 @@ def rune_deserialize(cls,
         rune_cls = cls._type_to_cls(rune_dict)
         model = rune_cls.model_validate(rune_dict, strict=strict)
         if validate_model:
-            model.validate_model(strict=strict,
+            model.validate_model(check_rune_constraints=check_rune_constraints,
+                                 strict=strict,
                                  raise_exc=raise_validation_errors)
         return model
 
@@ -212,6 +225,7 @@ def resolve_references(self):
             self.bind_property_to(prop_nm, ref)
 
     def validate_model(self,
+                       check_rune_constraints=True,
                        recursively: bool = True,
                        raise_exc: bool = True,
                        strict: bool = True) -> list:
@@ -226,8 +240,10 @@ def validate_model(self,
             self.disable_meta_checks()
             att_errors = self.validate_attribs(raise_exc=raise_exc,
                                                strict=strict)
-            return att_errors + self.validate_conditions(
-                recursively=recursively, raise_exc=raise_exc)
+            if check_rune_constraints:
+                att_errors.extend(self.validate_conditions(
+                    recursively=recursively, raise_exc=raise_exc))
+            return att_errors
         finally:
             self.enable_meta_checks()
 
diff --git a/src/rune/runtime/utils.py b/src/rune/runtime/utils.py
index 2543f67..fd335bb 100644
--- a/src/rune/runtime/utils.py
+++ b/src/rune/runtime/utils.py
@@ -22,7 +22,7 @@
 #     return eval(expr, globals(), {'self': obj})  # pylint: disable=eval-used
 
 
-def if_cond_fn(ifexpr, thenexpr: Callable, elseexpr: Callable) -> Any:
+def if_cond_fn(ifexpr: bool, thenexpr: Callable, elseexpr: Callable) -> Any:
     ''' A helper to return the value of the ternary operator
         (functional version).
     '''
diff --git a/test/cdm/test_trade_creation.py b/test/cdm/test_trade_creation.py
new file mode 100644
index 0000000..af418f7
--- /dev/null
+++ b/test/cdm/test_trade_creation.py
@@ -0,0 +1,58 @@
+'''test the if condition runtime functionality'''
+# pylint: disable=invalid-name
+from datetime import date
+import pytest
+try:
+    # pylint: disable=unused-import
+    # type: ignore
+    from cdm.event.common.Trade import Trade
+    from cdm.event.common.TradeIdentifier import TradeIdentifier
+    from cdm.product.template.TradableProduct import TradableProduct
+    from cdm.product.template.Product import Product
+    from cdm.product.template.TradeLot import TradeLot
+    from cdm.product.common.settlement.PriceQuantity import PriceQuantity
+    from cdm.base.staticdata.party.Party import Party
+    from cdm.base.staticdata.party.PartyIdentifier import PartyIdentifier
+    from cdm.base.staticdata.party.Counterparty import Counterparty
+    from cdm.base.staticdata.party.CounterpartyRoleEnum import CounterpartyRoleEnum
+    from cdm.base.staticdata.asset.common.Index import Index
+    from cdm.base.staticdata.identifier.AssignedIdentifier import AssignedIdentifier
+    NO_SER_TEST_MOD = False
+except ImportError:
+    NO_SER_TEST_MOD = True
+
+
+@pytest.mark.skipif(NO_SER_TEST_MOD, reason='CDM package not found')
+def test_simple_trade():
+    '''Constructs a simple Trade in memory and validates the model.'''
+    price_quantity = PriceQuantity()
+    trade_lot = TradeLot(priceQuantity=[price_quantity])
+    product = Product(index=Index())
+    counterparty = [
+        Counterparty(role=CounterpartyRoleEnum.PARTY_1,
+                     partyReference=Party(
+                         partyId=[PartyIdentifier(identifier='Acme Corp')])),
+        Counterparty(
+            role=CounterpartyRoleEnum.PARTY_2,
+            partyReference=Party(
+                partyId=[PartyIdentifier(identifier='Wile E. Coyote')]))
+    ]
+    tradable_product = TradableProduct(product=product,
+                                      tradeLot=[trade_lot],
+                                      counterparty=counterparty)
+    assigned_identifier = AssignedIdentifier(identifier='BIG DEAL!')
+    trade_identifier = [
+        TradeIdentifier(issuer='Acme Corp',
+                        assignedIdentifier=[assigned_identifier])
+    ]
+
+    # t = Trade(tradeDate=DateWithMeta(str(date(2023, 1, 1))),
+    t = Trade(tradeDate=date(2023, 1, 1),
+              tradableProduct=tradable_product,
+              tradeIdentifier=trade_identifier)
+    with pytest.raises(NameError):
+        exceptions = t.validate_model(raise_exc=False)
+    exceptions = t.validate_model(raise_exc=False, check_rune_constraints=False)
+    assert not exceptions
+
+# EOF