diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 40ba2c1..5e5aec2 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -83,8 +83,8 @@ repos:
         files: ^(docs/(.*/)*.*\.rst)
         additional_dependencies: [ Sphinx==6.2.1 ]
 
-#  - repo: local
-#    hooks:
+  - repo: local
+    hooks:
 #      - id: pytest
 #        name: Pytest
 #        entry: poetry run pytest -v
@@ -94,15 +94,15 @@ repos:
 #        pass_filenames: false
 #        always_run: true
 
-#      - id: pylint
-#        name: pylint
-#        entry: pylint
-#        language: system
-#        types: [ python ]
-#        require_serial: true
-#        args:
-#          - "-rn"
-#          - "-sn"
-#          - "--rcfile=pyproject.toml"
-#        files: ^django_notification/
-#        exclude: (migrations/|tests/|docs/).*
+      - id: pylint
+        name: pylint
+        entry: pylint
+        language: system
+        types: [ python ]
+        require_serial: true
+        args:
+          - "-rn"
+          - "-sn"
+          - "--rcfile=pyproject.toml"
+        files: ^django_notification/
+        exclude: (migrations/|tests/|docs/).*
diff --git a/django_notification/api/serializers/group.py b/django_notification/api/serializers/group.py
index be14918..3afd11e 100644
--- a/django_notification/api/serializers/group.py
+++ b/django_notification/api/serializers/group.py
@@ -3,6 +3,7 @@
 from django.contrib.auth.models import Group, Permission
 from rest_framework import serializers
 
+from django_notification.settings.conf import config
 from django_notification.utils.serialization.field_filters import (
     filter_non_empty_fields,
 )
@@ -50,7 +51,7 @@ def get_permissions(self, obj: Group) -> List[Dict]:
 
     def to_representation(self, instance: Group) -> Dict:
         """Customize the representation of the Group instance by filtering out
-        non-empty fields.
+        non-empty fields, if the exclude_serializer_null_fields flag is True.
 
         Args:
             instance (Group): The group instance being serialized.
@@ -60,4 +61,8 @@ def to_representation(self, instance: Group) -> Dict:
 
         """
         data = super().to_representation(instance)
-        return filter_non_empty_fields(data)
+
+        if config.exclude_serializer_null_fields:
+            return filter_non_empty_fields(data)
+
+        return data
diff --git a/django_notification/api/serializers/notification.py b/django_notification/api/serializers/notification.py
index e18a86f..9f6c4b3 100644
--- a/django_notification/api/serializers/notification.py
+++ b/django_notification/api/serializers/notification.py
@@ -7,6 +7,7 @@
     user_serializer_class,
 )
 from django_notification.models.notification import Notification
+from django_notification.settings.conf import config
 from django_notification.utils.serialization.field_filters import (
     filter_non_empty_fields,
 )
@@ -83,4 +84,8 @@ def to_representation(self, instance: Notification) -> Dict:
 
         """
         data = super().to_representation(instance)
-        return filter_non_empty_fields(data)
+
+        if config.exclude_serializer_null_fields:
+            return filter_non_empty_fields(data)
+
+        return data
diff --git a/django_notification/api/serializers/simple_notification.py b/django_notification/api/serializers/simple_notification.py
index 1d6ae8a..e131888 100644
--- a/django_notification/api/serializers/simple_notification.py
+++ b/django_notification/api/serializers/simple_notification.py
@@ -3,6 +3,7 @@
 from rest_framework.serializers import ModelSerializer, SerializerMethodField
 
 from django_notification.models.notification import Notification
+from django_notification.settings.conf import config
 from django_notification.utils.serialization import (
     filter_non_empty_fields,
     generate_title,
@@ -69,4 +70,8 @@ def to_representation(self, instance: Dict[str, Any]) -> Dict[str, str]:
 
         """
         data = super().to_representation(instance)
-        return filter_non_empty_fields(data)
+
+        if config.exclude_serializer_null_fields:
+            return filter_non_empty_fields(data)
+
+        return data
diff --git a/django_notification/constants/default_settings.py b/django_notification/constants/default_settings.py
index 4a95c9b..1e32010 100644
--- a/django_notification/constants/default_settings.py
+++ b/django_notification/constants/default_settings.py
@@ -14,7 +14,8 @@ class DefaultSerializerSettings:
 
 
 @dataclass(frozen=True)
-class DefaultAdminPermSettings:
+class DefaultAdminSettings:
+    admin_site_class: Optional[str] = None
     admin_has_add_permission: bool = False
     admin_has_change_permission: bool = False
     admin_has_delete_permission: bool = False
@@ -30,7 +31,7 @@ class DefaultThrottleSettings:
 @dataclass(frozen=True)
 class DefaultPaginationAndFilteringSettings:
     pagination_class: str = "django_notification.api.paginations.limit_offset_pagination.DefaultLimitOffSetPagination"
-    filterset_class: str = None
+    filterset_class: Optional[str] = None
     ordering_fields: List[str] = field(
         default_factory=lambda: ["id", "timestamp", "public"]
     )
@@ -44,6 +45,7 @@ class DefaultAPISettings:
     allow_list: bool = True
     allow_retrieve: bool = True
     include_serializer_full_details: bool = False
+    exclude_serializer_none_fields: bool = False
     extra_permission_class: Optional[str] = None
     parser_classes: List[str] = field(
         default_factory=lambda: [
diff --git a/django_notification/settings/checks.py b/django_notification/settings/checks.py
index 911918a..e1b9c41 100644
--- a/django_notification/settings/checks.py
+++ b/django_notification/settings/checks.py
@@ -38,119 +38,131 @@ def check_notification_settings(app_configs: Any, **kwargs: Any) -> List[Error]:
     # Validate boolean settings
     errors.extend(
         validate_boolean_setting(
-            config.include_soft_delete, "DJANGO_NOTIFICATION_API_INCLUDE_SOFT_DELETE"
+            config.include_soft_delete, f"{config.prefix}API_INCLUDE_SOFT_DELETE"
         )
     )
     errors.extend(
         validate_boolean_setting(
-            config.include_hard_delete, "DJANGO_NOTIFICATION_API_INCLUDE_HARD_DELETE"
+            config.include_hard_delete, f"{config.prefix}API_INCLUDE_HARD_DELETE"
         )
     )
     errors.extend(
         validate_boolean_setting(
             config.admin_has_add_permission,
-            "DJANGO_NOTIFICATION_ADMIN_HAS_ADD_PERMISSION",
+            f"{config.prefix}ADMIN_HAS_ADD_PERMISSION",
         )
     )
     errors.extend(
         validate_boolean_setting(
             config.admin_has_change_permission,
-            "DJANGO_NOTIFICATION_ADMIN_HAS_CHANGE_PERMISSION",
+            f"{config.prefix}ADMIN_HAS_CHANGE_PERMISSION",
         )
     )
     errors.extend(
         validate_boolean_setting(
             config.admin_has_delete_permission,
-            "DJANGO_NOTIFICATION_ADMIN_HAS_DELETE_PERMISSION",
+            f"{config.prefix}ADMIN_HAS_DELETE_PERMISSION",
         )
     )
     errors.extend(
         validate_boolean_setting(
             config.include_serializer_full_details,
-            "DJANGO_NOTIFICATION_SERIALIZER_INCLUDE_FULL_DETAILS",
+            f"{config.prefix}SERIALIZER_INCLUDE_FULL_DETAILS",
         )
     )
     errors.extend(
         validate_boolean_setting(
-            config.api_allow_list, "DJANGO_NOTIFICATION_API_ALLOW_LIST"
+            config.exclude_serializer_null_fields,
+            f"{config.prefix}SERIALIZER_EXCLUDE_NULL_FIELDS",
         )
     )
     errors.extend(
         validate_boolean_setting(
-            config.api_allow_retrieve, "DJANGO_NOTIFICATION_API_ALLOW_RETRIEVE"
+            config.api_allow_list, f"{config.prefix}API_ALLOW_LIST"
+        )
+    )
+    errors.extend(
+        validate_boolean_setting(
+            config.api_allow_retrieve, f"{config.prefix}API_ALLOW_RETRIEVE"
         )
     )
 
     errors.extend(
         validate_list_fields(
-            config.user_serializer_fields, "DJANGO_NOTIFICATION_USER_SERIALIZER_FIELDS"
+            config.user_serializer_fields, f"{config.prefix}USER_SERIALIZER_FIELDS"
         )
     )
 
     errors.extend(
         validate_list_fields(
-            config.api_ordering_fields, "DJANGO_NOTIFICATION_API_ORDERING_FIELDS"
+            config.api_ordering_fields, f"{config.prefix}API_ORDERING_FIELDS"
         )
     )
 
     errors.extend(
         validate_list_fields(
-            config.api_search_fields, "DJANGO_NOTIFICATION_API_SEARCH_FIELDS"
+            config.api_search_fields, f"{config.prefix}API_SEARCH_FIELDS"
         )
     )
 
     errors.extend(
         validate_throttle_rate(
             config.staff_user_throttle_rate,
-            "DJANGO_NOTIFICATION_STAFF_USER_THROTTLE_RATE",
+            f"{config.prefix}STAFF_USER_THROTTLE_RATE",
         )
     )
     errors.extend(
         validate_throttle_rate(
             config.authenticated_user_throttle_rate,
-            "DJANGO_NOTIFICATION_AUTHENTICATED_USER_THROTTLE_RATE",
+            f"{config.prefix}AUTHENTICATED_USER_THROTTLE_RATE",
         )
     )
     errors.extend(
         validate_optional_class_setting(
-            config.get_setting("DJANGO_NOTIFICATION_USER_SERIALIZER_CLASS", None),
-            "DJANGO_NOTIFICATION_USER_SERIALIZER_CLASS",
+            config.get_setting(f"{config.prefix}USER_SERIALIZER_CLASS", None),
+            f"{config.prefix}USER_SERIALIZER_CLASS",
         )
     )
     errors.extend(
         validate_optional_class_setting(
-            config.get_setting("DJANGO_NOTIFICATION_GROUP_SERIALIZER_CLASS", None),
-            "DJANGO_NOTIFICATION_GROUP_SERIALIZER_CLASS",
+            config.get_setting(f"{config.prefix}GROUP_SERIALIZER_CLASS", None),
+            f"{config.prefix}GROUP_SERIALIZER_CLASS",
         )
     )
     errors.extend(
         validate_optional_class_setting(
-            config.get_setting("DJANGO_NOTIFICATION_API_THROTTLE_CLASS", None),
-            "DJANGO_NOTIFICATION_API_THROTTLE_CLASS",
+            config.get_setting(f"{config.prefix}API_THROTTLE_CLASS", None),
+            f"{config.prefix}API_THROTTLE_CLASS",
         )
     )
     errors.extend(
         validate_optional_class_setting(
-            config.get_setting("DJANGO_NOTIFICATION_API_PAGINATION_CLASS", None),
-            "DJANGO_NOTIFICATION_API_PAGINATION_CLASS",
+            config.get_setting(f"{config.prefix}API_PAGINATION_CLASS", None),
+            f"{config.prefix}API_PAGINATION_CLASS",
         )
     )
     errors.extend(
         validate_optional_classes_setting(
-            config.get_setting("DJANGO_NOTIFICATION_API_PARSER_CLASSES", []),
-            "DJANGO_NOTIFICATION_API_PARSER_CLASSES",
+            config.get_setting(f"{config.prefix}API_PARSER_CLASSES", []),
+            f"{config.prefix}API_PARSER_CLASSES",
+        )
+    )
+    errors.extend(
+        validate_optional_class_setting(
+            config.get_setting(f"{config.prefix}API_FILTERSET_CLASS", None),
+            f"{config.prefix}API_FILTERSET_CLASS",
         )
     )
     errors.extend(
         validate_optional_class_setting(
-            config.get_setting("DJANGO_NOTIFICATION_API_FILTERSET_CLASS", None),
-            "DJANGO_NOTIFICATION_API_FILTERSET_CLASS",
+            config.get_setting(f"{config.prefix}API_EXTRA_PERMISSION_CLASS", None),
+            f"{config.prefix}API_EXTRA_PERMISSION_CLASS",
         )
     )
     errors.extend(
         validate_optional_class_setting(
-            config.get_setting("DJANGO_NOTIFICATION_API_EXTRA_PERMISSION_CLASS", None),
-            "DJANGO_NOTIFICATION_API_EXTRA_PERMISSION_CLASS",
+            config.get_setting(f"{config.prefix}ADMIN_SITE_CLASS", None),
+            f"{config.prefix}ADMIN_SITE_CLASS",
         )
     )
 
diff --git a/django_notification/settings/conf.py b/django_notification/settings/conf.py
index 67a87c5..2d2b88e 100644
--- a/django_notification/settings/conf.py
+++ b/django_notification/settings/conf.py
@@ -76,6 +76,10 @@ def __init__(self) -> None:
             f"{self.prefix}SERIALIZER_INCLUDE_FULL_DETAILS",
             self.default_api_settings.include_serializer_full_details,
         )
+        self.exclude_serializer_null_fields: bool = self.get_setting(
+            f"{self.prefix}SERIALIZER_EXCLUDE_NULL_FIELDS",
+            self.default_api_settings.exclude_serializer_none_fields,
+        )
 
         self.api_allow_list: bool = self.get_setting(
             f"{self.prefix}API_ALLOW_LIST", self.default_api_settings.allow_list
diff --git a/django_notification/tests/api/serializers/test_group.py b/django_notification/tests/api/serializers/test_group.py
index f4071e1..9a9353e 100644
--- a/django_notification/tests/api/serializers/test_group.py
+++ b/django_notification/tests/api/serializers/test_group.py
@@ -1,9 +1,11 @@
 import sys
+from unittest.mock import patch
 
 import pytest
 from django.contrib.auth.models import Group
 from rest_framework.exceptions import ValidationError
 from django_notification.api.serializers.group import GroupSerializer
+from django_notification.settings.conf import config
 from django_notification.utils.serialization.field_filters import (
     filter_non_empty_fields,
 )
@@ -23,6 +25,7 @@ class TestGroupSerializer:
     Test the GroupSerializer and PermissionSerializer functionality.
     """
 
+    @patch.object(config, "exclude_serializer_null_fields", False)
     def test_group_serializer_with_valid_data(self, group_with_perm: Group) -> None:
         """
         Test that the GroupSerializer correctly serializes a group with permissions.
diff --git a/django_notification/tests/api/serializers/test_simple_notification_serializer.py b/django_notification/tests/api/serializers/test_simple_notification_serializer.py
index 1331d10..7196967 100644
--- a/django_notification/tests/api/serializers/test_simple_notification_serializer.py
+++ b/django_notification/tests/api/serializers/test_simple_notification_serializer.py
@@ -1,11 +1,13 @@
 import sys
 from typing import Dict, Any
+from unittest.mock import patch
 
 import pytest
 
 from django_notification.api.serializers.simple_notification import (
     SimpleNotificationSerializer,
 )
+from django_notification.settings.conf import config
 from django_notification.utils.serialization.field_filters import (
     filter_non_empty_fields,
 )
@@ -52,6 +54,7 @@ def test_serializer_fields(self, notification_dict: Dict[str, Any]) -> None:
         serializer = SimpleNotificationSerializer(notification_dict)
         assert set(serializer.data.keys()) == set(expected_fields)
 
+    @patch.object(config, "exclude_serializer_null_fields", False)
     @mark.django_db
     def test_title_generation(self, notification_dict: Dict[str, Any]) -> None:
         """
diff --git a/django_notification/tests/api/views/test_notification.py b/django_notification/tests/api/views/test_notification.py
index 4b4de07..4f80780 100644
--- a/django_notification/tests/api/views/test_notification.py
+++ b/django_notification/tests/api/views/test_notification.py
@@ -36,6 +36,7 @@ def setup_method(self) -> None:
         """
         self.client = APIClient()
 
+    @patch.object(config, "exclude_serializer_null_fields", False)
     def test_get_queryset_for_staff(
         self, admin_user: Type[User], notification: Notification
     ) -> None:
diff --git a/django_notification/tests/constants.py b/django_notification/tests/constants.py
index c2cde2a..766fa3f 100644
--- a/django_notification/tests/constants.py
+++ b/django_notification/tests/constants.py
@@ -1,2 +1,2 @@
-PYTHON_VERSION = (3, 8)
-PYTHON_VERSION_REASON = "Requires Python 3.8 or higher"
+PYTHON_VERSION = (3, 9)
+PYTHON_VERSION_REASON = "Requires Python 3.9 or higher"
diff --git a/django_notification/tests/settings/test_checks.py b/django_notification/tests/settings/test_checks.py
index da4a56c..de26707 100644
--- a/django_notification/tests/settings/test_checks.py
+++ b/django_notification/tests/settings/test_checks.py
@@ -33,6 +33,7 @@ def test_valid_settings(self, mock_config: MagicMock) -> None:
         mock_config.admin_has_change_permission = False
         mock_config.admin_has_delete_permission = False
         mock_config.include_serializer_full_details = True
+        mock_config.exclude_serializer_null_fields = True
         mock_config.api_allow_list = True
         mock_config.api_allow_retrieve = False
         mock_config.user_serializer_fields = ["id", "username"]
@@ -66,7 +67,8 @@ def test_invalid_boolean_settings(self, mock_config: MagicMock) -> None:
         mock_config.admin_has_add_permission = "not_boolean"
         mock_config.admin_has_change_permission = "not_boolean"
         mock_config.admin_has_delete_permission = "not_boolean"
-        mock_config.include_serializer_full_details = True
+        mock_config.include_serializer_full_details = "not_bool"
+        mock_config.exclude_serializer_null_fields = "not_boolean"
         mock_config.user_serializer_fields = ["id", "username"]
         mock_config.api_ordering_fields = ["created_at"]
         mock_config.api_search_fields = ["title"]
@@ -78,31 +80,39 @@ def test_invalid_boolean_settings(self, mock_config: MagicMock) -> None:
 
         errors = check_notification_settings(None)
 
-        # Expect 6 errors for invalid boolean values
-        assert len(errors) == 6
+        # Expect 8 errors for invalid boolean values
+        assert len(errors) == 8
         assert (
             errors[0].id
-            == "django_notification.E001_DJANGO_NOTIFICATION_API_INCLUDE_SOFT_DELETE"
+            == f"django_notification.E001_{mock_config.prefix}API_INCLUDE_SOFT_DELETE"
         )
         assert (
             errors[1].id
-            == "django_notification.E001_DJANGO_NOTIFICATION_API_INCLUDE_HARD_DELETE"
+            == f"django_notification.E001_{mock_config.prefix}API_INCLUDE_HARD_DELETE"
         )
         assert (
             errors[2].id
-            == "django_notification.E001_DJANGO_NOTIFICATION_ADMIN_HAS_ADD_PERMISSION"
+            == f"django_notification.E001_{mock_config.prefix}ADMIN_HAS_ADD_PERMISSION"
         )
         assert (
             errors[3].id
-            == "django_notification.E001_DJANGO_NOTIFICATION_ADMIN_HAS_CHANGE_PERMISSION"
+            == f"django_notification.E001_{mock_config.prefix}ADMIN_HAS_CHANGE_PERMISSION"
         )
         assert (
             errors[4].id
-            == "django_notification.E001_DJANGO_NOTIFICATION_ADMIN_HAS_DELETE_PERMISSION"
+            == f"django_notification.E001_{mock_config.prefix}ADMIN_HAS_DELETE_PERMISSION"
         )
         assert (
-            errors[5].id
-            == "django_notification.E001_DJANGO_NOTIFICATION_API_ALLOW_LIST"
+                errors[5].id
+                == f"django_notification.E001_{mock_config.prefix}SERIALIZER_INCLUDE_FULL_DETAILS"
+        )
+        assert (
+                errors[6].id
+                == f"django_notification.E001_{mock_config.prefix}SERIALIZER_EXCLUDE_NULL_FIELDS"
+        )
+        assert (
+            errors[7].id
+            == f"django_notification.E001_{mock_config.prefix}API_ALLOW_LIST"
         )
 
     @patch("django_notification.settings.checks.config")
@@ -125,6 +135,7 @@ def test_invalid_list_settings(self, mock_config: MagicMock) -> None:
         mock_config.admin_has_change_permission = False
         mock_config.admin_has_delete_permission = False
         mock_config.include_serializer_full_details = True
+        mock_config.exclude_serializer_null_fields = True
         mock_config.api_allow_list = True
         mock_config.api_allow_retrieve = False
         mock_config.user_serializer_fields = []
@@ -140,15 +151,15 @@ def test_invalid_list_settings(self, mock_config: MagicMock) -> None:
         assert len(errors) == 3
         assert (
             errors[0].id
-            == "django_notification.E003_DJANGO_NOTIFICATION_USER_SERIALIZER_FIELDS"
+            == f"django_notification.E003_{mock_config.prefix}USER_SERIALIZER_FIELDS"
         )
         assert (
             errors[1].id
-            == "django_notification.E003_DJANGO_NOTIFICATION_API_ORDERING_FIELDS"
+            == f"django_notification.E003_{mock_config.prefix}API_ORDERING_FIELDS"
         )
         assert (
             errors[2].id
-            == "django_notification.E004_DJANGO_NOTIFICATION_API_SEARCH_FIELDS"
+            == f"django_notification.E004_{mock_config.prefix}API_SEARCH_FIELDS"
         )
 
     @patch("django_notification.settings.checks.config")
@@ -171,6 +182,7 @@ def test_invalid_throttle_rate(self, mock_config: MagicMock) -> None:
         mock_config.admin_has_change_permission = False
         mock_config.admin_has_delete_permission = False
         mock_config.include_serializer_full_details = True
+        mock_config.exclude_serializer_null_fields = True
         mock_config.api_allow_list = True
         mock_config.api_allow_retrieve = False
         mock_config.user_serializer_fields = ["id", "username"]
@@ -207,6 +219,7 @@ def test_invalid_class_import(self, mock_config: MagicMock) -> None:
         mock_config.admin_has_change_permission = False
         mock_config.admin_has_delete_permission = False
         mock_config.include_serializer_full_details = True
+        mock_config.exclude_serializer_null_fields = True
         mock_config.api_allow_list = True
         mock_config.api_allow_retrieve = False
         mock_config.user_serializer_fields = ["id", "username"]
@@ -220,33 +233,37 @@ def test_invalid_class_import(self, mock_config: MagicMock) -> None:
 
         errors = check_notification_settings(None)
 
-        # Expect 7 errors for invalid class imports
-        assert len(errors) == 7
+        # Expect 8 errors for invalid class imports
+        assert len(errors) == 8
         assert (
             errors[0].id
-            == "django_notification.E010_DJANGO_NOTIFICATION_USER_SERIALIZER_CLASS"
+            == f"django_notification.E010_{mock_config.prefix}USER_SERIALIZER_CLASS"
         )
         assert (
             errors[1].id
-            == "django_notification.E010_DJANGO_NOTIFICATION_GROUP_SERIALIZER_CLASS"
+            == f"django_notification.E010_{mock_config.prefix}GROUP_SERIALIZER_CLASS"
         )
         assert (
             errors[2].id
-            == "django_notification.E010_DJANGO_NOTIFICATION_API_THROTTLE_CLASS"
+            == f"django_notification.E010_{mock_config.prefix}API_THROTTLE_CLASS"
         )
         assert (
             errors[3].id
-            == "django_notification.E010_DJANGO_NOTIFICATION_API_PAGINATION_CLASS"
+            == f"django_notification.E010_{mock_config.prefix}API_PAGINATION_CLASS"
         )
         assert (
             errors[4].id
-            == "django_notification.E011_DJANGO_NOTIFICATION_API_PARSER_CLASSES"
+            == f"django_notification.E011_{mock_config.prefix}API_PARSER_CLASSES"
         )
         assert (
             errors[5].id
-            == "django_notification.E010_DJANGO_NOTIFICATION_API_FILTERSET_CLASS"
+            == f"django_notification.E010_{mock_config.prefix}API_FILTERSET_CLASS"
         )
         assert (
             errors[6].id
-            == "django_notification.E010_DJANGO_NOTIFICATION_API_EXTRA_PERMISSION_CLASS"
+            == f"django_notification.E010_{mock_config.prefix}API_EXTRA_PERMISSION_CLASS"
+        )
+        assert (
+                errors[7].id
+                == f"django_notification.E010_{mock_config.prefix}ADMIN_SITE_CLASS"
         )
diff --git a/django_notification/tests/setup.py b/django_notification/tests/setup.py
index 4fa12ff..c39d29f 100644
--- a/django_notification/tests/setup.py
+++ b/django_notification/tests/setup.py
@@ -93,6 +93,7 @@ def configure_django_settings() -> None:
             DJANGO_NOTIFICATION_ADMIN_HAS_ADD_PERMISSION=False,
             DJANGO_NOTIFICATION_ADMIN_HAS_CHANGE_PERMISSION=False,
             DJANGO_NOTIFICATION_ADMIN_HAS_DELETE_PERMISSION=False,
+            DJANGO_NOTIFICATION_SERIALIZER_EXCLUDE_NULL_FIELDS=True,
             DJANGO_NOTIFICATION_API_ALLOW_LIST=True,
             DJANGO_NOTIFICATION_API_ALLOW_RETRIEVE=True,
             DJANGO_NOTIFICATION_AUTHENTICATED_USER_THROTTLE_RATE="20/minute",