diff --git a/docs/release-notes/version-2.8.md b/docs/release-notes/version-2.8.md
index 0b0539c02..da131857a 100644
--- a/docs/release-notes/version-2.8.md
+++ b/docs/release-notes/version-2.8.md
@@ -5,6 +5,7 @@
 ### Bug Fixes
 
 * [#4489](https://github.com/netbox-community/netbox/issues/4489) - Fix display of parent/child role on device type view
+* [#4496](https://github.com/netbox-community/netbox/issues/4496) - Fix exception when validating certain models via REST API
 
 ---
 
diff --git a/netbox/dcim/api/serializers.py b/netbox/dcim/api/serializers.py
index 04d125b21..9ac58dc3a 100644
--- a/netbox/dcim/api/serializers.py
+++ b/netbox/dcim/api/serializers.py
@@ -143,8 +143,7 @@ class RackSerializer(TaggitSerializer, CustomFieldModelSerializer):
         # Validate uniqueness of (group, facility_id) since we omitted the automatically-created validator from Meta.
         if data.get('facility_id', None):
             validator = UniqueTogetherValidator(queryset=Rack.objects.all(), fields=('group', 'facility_id'))
-            validator.set_context(self)
-            validator(data)
+            validator(data, self)
 
         # Enforce model validation
         super().validate(data)
@@ -395,8 +394,7 @@ class DeviceSerializer(TaggitSerializer, CustomFieldModelSerializer):
         # Validate uniqueness of (rack, position, face) since we omitted the automatically-created validator from Meta.
         if data.get('rack') and data.get('position') and data.get('face'):
             validator = UniqueTogetherValidator(queryset=Device.objects.all(), fields=('rack', 'position', 'face'))
-            validator.set_context(self)
-            validator(data)
+            validator(data, self)
 
         # Enforce model validation
         super().validate(data)
diff --git a/netbox/dcim/tests/test_api.py b/netbox/dcim/tests/test_api.py
index 26cf3d1c2..d45d972f8 100644
--- a/netbox/dcim/tests/test_api.py
+++ b/netbox/dcim/tests/test_api.py
@@ -582,6 +582,7 @@ class RackTest(APITestCase):
 
         data = {
             'name': 'Test Rack 4',
+            'facility_id': '1234',
             'site': self.site1.pk,
             'group': self.rackgroup1.pk,
             'role': self.rackrole1.pk,
@@ -1815,6 +1816,7 @@ class DeviceTest(APITestCase):
 
         self.site1 = Site.objects.create(name='Test Site 1', slug='test-site-1')
         self.site2 = Site.objects.create(name='Test Site 2', slug='test-site-2')
+        self.rack1 = Rack.objects.create(name='Test Rack 1', site=self.site1, u_height=48)
         manufacturer = Manufacturer.objects.create(name='Test Manufacturer 1', slug='test-manufacturer-1')
         self.devicetype1 = DeviceType.objects.create(
             manufacturer=manufacturer, model='Test Device Type 1', slug='test-device-type-1'
@@ -1920,6 +1922,9 @@ class DeviceTest(APITestCase):
             'device_role': self.devicerole1.pk,
             'name': 'Test Device 4',
             'site': self.site1.pk,
+            'rack': self.rack1.pk,
+            'face': DeviceFaceChoices.FACE_FRONT,
+            'position': 1,
             'cluster': self.cluster1.pk,
         }
 
diff --git a/netbox/ipam/api/serializers.py b/netbox/ipam/api/serializers.py
index 5abe4c585..4e596631d 100644
--- a/netbox/ipam/api/serializers.py
+++ b/netbox/ipam/api/serializers.py
@@ -90,8 +90,7 @@ class VLANGroupSerializer(ValidatedModelSerializer):
         if data.get('site', None):
             for field in ['name', 'slug']:
                 validator = UniqueTogetherValidator(queryset=VLANGroup.objects.all(), fields=('site', field))
-                validator.set_context(self)
-                validator(data)
+                validator(data, self)
 
         # Enforce model validation
         super().validate(data)
@@ -122,8 +121,7 @@ class VLANSerializer(TaggitSerializer, CustomFieldModelSerializer):
         if data.get('group', None):
             for field in ['vid', 'name']:
                 validator = UniqueTogetherValidator(queryset=VLAN.objects.all(), fields=('group', field))
-                validator.set_context(self)
-                validator(data)
+                validator(data, self)
 
         # Enforce model validation
         super().validate(data)
diff --git a/netbox/ipam/tests/test_api.py b/netbox/ipam/tests/test_api.py
index b38daa079..c20ef6158 100644
--- a/netbox/ipam/tests/test_api.py
+++ b/netbox/ipam/tests/test_api.py
@@ -785,6 +785,7 @@ class VLANGroupTest(APITestCase):
 
         super().setUp()
 
+        self.site1 = Site.objects.create(name='Test Site 1', slug='test-site-1')
         self.vlangroup1 = VLANGroup.objects.create(name='Test VLAN Group 1', slug='test-vlan-group-1')
         self.vlangroup2 = VLANGroup.objects.create(name='Test VLAN Group 2', slug='test-vlan-group-2')
         self.vlangroup3 = VLANGroup.objects.create(name='Test VLAN Group 3', slug='test-vlan-group-3')
@@ -818,6 +819,7 @@ class VLANGroupTest(APITestCase):
         data = {
             'name': 'Test VLAN Group 4',
             'slug': 'test-vlan-group-4',
+            'site': self.site1.pk,
         }
 
         url = reverse('ipam-api:vlangroup-list')
@@ -886,10 +888,10 @@ class VLANTest(APITestCase):
 
         super().setUp()
 
+        self.group1 = VLANGroup.objects.create(name='Test VLAN Group 1', slug='test-vlan-group-1')
         self.vlan1 = VLAN.objects.create(vid=1, name='Test VLAN 1')
         self.vlan2 = VLAN.objects.create(vid=2, name='Test VLAN 2')
         self.vlan3 = VLAN.objects.create(vid=3, name='Test VLAN 3')
-
         self.prefix1 = Prefix.objects.create(prefix=IPNetwork('192.168.1.0/24'))
 
     def test_get_vlan(self):
@@ -921,6 +923,7 @@ class VLANTest(APITestCase):
         data = {
             'vid': 4,
             'name': 'Test VLAN 4',
+            'group': self.group1.pk,
         }
 
         url = reverse('ipam-api:vlan-list')