diff --git a/src/ansys/openapi/common/_api_client.py b/src/ansys/openapi/common/_api_client.py
index d62c11d6..05627f07 100644
--- a/src/ansys/openapi/common/_api_client.py
+++ b/src/ansys/openapi/common/_api_client.py
@@ -373,7 +373,7 @@ def __deserialize(self, data: SerializedType, klass_name: str) -> DeserializedTy
             assert isinstance(data, str)
             return self.__deserialize_datetime(data)
         else:
-            assert isinstance(data, dict)
+            assert isinstance(data, (dict, str))
             return self.__deserialize_model(data, klass)
 
     def call_api(
@@ -794,20 +794,28 @@ def __deserialize_datetime(value: str) -> datetime.datetime:
             )
 
     def __deserialize_model(
-        self, data: Dict, klass: Type[ModelBase]
-    ) -> Union[ModelBase, Dict]:
-        """Deserialize ``dict`` to model.
+        self, data: Union[Dict, str], klass: Type[ModelBase]
+    ) -> Union[ModelBase, Dict, str]:
+        """Deserialize model representation to model.
 
         Given a model type and the serialized data, deserialize into an instance of the model class.
 
         Parameters
         ----------
-        data : Dict
+        data : Union[Dict, str]
             Serialized representation of the model object.
         klass : ModelType
             Type of the model to deserialize.
         """
 
+        if not klass.swagger_types:
+            try:
+                klass.get_real_child_model(klass(), {})
+            except NotImplementedError:
+                return data
+            except BaseException:
+                pass
+
         kwargs = {}
         if klass.swagger_types is not None:
             for attr, attr_type in klass.swagger_types.items():
diff --git a/src/ansys/openapi/common/_base/_types.py b/src/ansys/openapi/common/_base/_types.py
index 29bbeaef..30b9928a 100644
--- a/src/ansys/openapi/common/_base/_types.py
+++ b/src/ansys/openapi/common/_base/_types.py
@@ -37,7 +37,8 @@ def to_dict(self) -> Dict[str, DeserializedType]:
     def to_str(self) -> str:
         ...
 
-    def get_real_child_model(self, data: Dict) -> str:
+    def get_real_child_model(self, data: Union[Dict, str]) -> str:
+        """Classes with discriminators will override this method and may change the method signature."""
         raise NotImplementedError()
 
 
diff --git a/tests/models/__init__.py b/tests/models/__init__.py
index 2453f790..64f11212 100644
--- a/tests/models/__init__.py
+++ b/tests/models/__init__.py
@@ -1,2 +1,3 @@
 from .example_model import ExampleModel
 from .example_base_model import ExampleBaseModel
+from .example_model_with_enum import ExampleModelWithEnum
diff --git a/tests/models/example_model_with_enum.py b/tests/models/example_model_with_enum.py
new file mode 100644
index 00000000..5691ad8e
--- /dev/null
+++ b/tests/models/example_model_with_enum.py
@@ -0,0 +1,81 @@
+import pprint
+from ansys.openapi.common import ModelBase
+
+
+class ExampleModelWithEnum(ModelBase):
+    """NOTE: This class is auto generated by the swagger code generator program.
+
+    Do not edit the class manually.
+    """
+
+    """
+    allowed enum values
+    """
+    EXCELLENT = "Excellent"
+    GOOD = "Good"
+    ACCEPTABLE = "Acceptable"
+    POOR = "Poor"
+    """
+    Attributes:
+      swagger_types (dict): The key is attribute name
+                            and the value is attribute type.
+      attribute_map (dict): The key is attribute name
+                            and the value is json key in definition.
+    """
+    swagger_types = {}
+
+    attribute_map = {}
+
+    subtype_mapping = {}
+
+    def __init__(self):  # noqa: E501
+        """ExampleModelWithEnum - a model defined in Swagger"""  # noqa: E501
+        self.discriminator = None
+
+    def to_dict(self):
+        """Returns the model properties as a dict"""
+        result = {}
+
+        for attr in self.swagger_types.keys():
+            value = getattr(self, attr)
+            if isinstance(value, list):
+                result[attr] = list(
+                    map(lambda x: x.to_dict() if hasattr(x, "to_dict") else x, value)
+                )
+            elif hasattr(value, "to_dict"):
+                result[attr] = value.to_dict()
+            elif isinstance(value, dict):
+                result[attr] = dict(
+                    map(
+                        lambda item: (item[0], item[1].to_dict())
+                        if hasattr(item[1], "to_dict")
+                        else item,
+                        value.items(),
+                    )
+                )
+            else:
+                result[attr] = value
+        if issubclass(ExampleModelWithEnum, dict):
+            for key, value in self.items():
+                result[key] = value
+
+        return result
+
+    def to_str(self):
+        """Returns the string representation of the model"""
+        return pprint.pformat(self.to_dict())
+
+    def __repr__(self):
+        """For `print` and `pprint`"""
+        return self.to_str()
+
+    def __eq__(self, other):
+        """Returns true if both objects are equal"""
+        if not isinstance(other, ExampleModelWithEnum):
+            return False
+
+        return self.__dict__ == other.__dict__
+
+    def __ne__(self, other):
+        """Returns true if both objects are not equal"""
+        return not self == other
diff --git a/tests/test_api_client.py b/tests/test_api_client.py
index 1c0d3b9f..a1a582c5 100644
--- a/tests/test_api_client.py
+++ b/tests/test_api_client.py
@@ -184,6 +184,15 @@ def test_serialize_model(self):
         serialized_model = self._client.sanitize_for_serialization(model_instance)
         assert serialized_model == model_dict
 
+    def test_serialize_enum_model(self):
+        from . import models
+
+        self._client.setup_client(models)
+        model_instance = models.ExampleModelWithEnum().GOOD
+        model_value = "Good"
+        serialized_model = self._client.sanitize_for_serialization(model_instance)
+        assert serialized_model == model_value
+
 
 class TestDeserialization:
     _test_value_list = ["foo", int(2), 2.0, True]
@@ -309,6 +318,16 @@ def test_deserialize_model_with_discriminator(self):
         assert isinstance(deserialized_model, models.ExampleModel)
         assert deserialized_model == model_instance
 
+    def test_deserialize_enum_model(self):
+        from . import models
+
+        self._client.setup_client(models)
+        model_instance = models.ExampleModelWithEnum().GOOD
+        model_value = "Good"
+        type_ref = "ExampleModelWithEnum"
+        serialized_model = self._client._ApiClient__deserialize(model_value, type_ref)
+        assert serialized_model == model_instance
+
     @pytest.mark.parametrize(
         ("data", "target_type"),
         (