diff --git a/app/api/tests/functional/test_functional_api_fields.py b/app/api/tests/functional/test_functional_api_fields.py
index 38ea3ed3..6a7a22a6 100644
--- a/app/api/tests/functional/test_functional_api_fields.py
+++ b/app/api/tests/functional/test_functional_api_fields.py
@@ -3,6 +3,7 @@ import django
 import pytest
 
 from django.contrib.auth.models import ContentType, Permission
+from django.db import models
 from django.shortcuts import reverse
 from django.test import Client
 
@@ -11,8 +12,6 @@ from rest_framework.relations import Hyperlink
 from access.models.team import Team
 from access.models.team_user import TeamUsers
 
-from centurion.tests.common import DoesNotExist
-
 User = django.contrib.auth.get_user_model()
 
 
@@ -252,7 +251,7 @@ class APIFieldsTestCases:
 
         api_data_two = recursearray(self.api_data_two, param_value)
 
-        if param_expected is DoesNotExist:
+        if param_expected is models.NOT_PROVIDED:
 
             assert(
                 api_data['key'] not in api_data['obj']
@@ -278,7 +277,7 @@ class APIFieldsTestCases:
 
         api_data_two = recursearray(self.api_data_two, param_value)
 
-        if param_expected is DoesNotExist:
+        if param_expected is models.NOT_PROVIDED:
 
             assert(
                 api_data['key'] not in api_data['obj']
diff --git a/app/core/tests/unit/ticket_base/test_unit_ticket_base_api_fields.py b/app/core/tests/unit/ticket_base/test_unit_ticket_base_api_fields.py
index fa353788..b0344d9e 100644
--- a/app/core/tests/unit/ticket_base/test_unit_ticket_base_api_fields.py
+++ b/app/core/tests/unit/ticket_base/test_unit_ticket_base_api_fields.py
@@ -1,13 +1,14 @@
 import django
 import pytest
 
+from django.db import models
+
 from rest_framework.relations import Hyperlink
 
 from access.models.entity import Entity
 
 from api.tests.functional.test_functional_api_fields import (
     APIFieldsInheritedCases,
-    DoesNotExist,
 )
 
 from core.models.ticket.ticket_category import TicketCategory
@@ -127,10 +128,10 @@ class APITestCases(
 
     parameterized_test_data = {
         'model_notes': {
-            'expected': DoesNotExist
+            'expected': models.NOT_PROVIDED
         },
         '_urls.notes': {
-            'expected': DoesNotExist
+            'expected': models.NOT_PROVIDED
         },
         'external_system': {
             'expected': int
diff --git a/app/core/tests/unit/ticket_comment_base/test_unit_ticket_comment_base_api_fields.py b/app/core/tests/unit/ticket_comment_base/test_unit_ticket_comment_base_api_fields.py
index a0ca3613..00ce5d02 100644
--- a/app/core/tests/unit/ticket_comment_base/test_unit_ticket_comment_base_api_fields.py
+++ b/app/core/tests/unit/ticket_comment_base/test_unit_ticket_comment_base_api_fields.py
@@ -2,12 +2,11 @@ import django
 import pytest
 
 from django.contrib.auth.models import ContentType, Permission
+from django.db import models
 from django.shortcuts import reverse
 
 from rest_framework.relations import Hyperlink
 
-from centurion.tests.common import DoesNotExist
-
 from api.tests.functional.test_functional_api_fields import (
     APIFieldsInheritedCases,
 )
@@ -327,13 +326,13 @@ class TicketCommentBaseAPITestCases(
         # Below fields dont exist.
 
         'display_name': {
-            'expected': DoesNotExist
+            'expected': models.NOT_PROVIDED
         },
         'model_notes': {
-            'expected': DoesNotExist
+            'expected': models.NOT_PROVIDED
         },
         '_urls.notes': {
-            'expected': DoesNotExist
+            'expected': models.NOT_PROVIDED
         },
     }