diff --git a/netbox/ipam/api/views.py b/netbox/ipam/api/views.py
index 99b4c023d95..78040fa40fe 100644
--- a/netbox/ipam/api/views.py
+++ b/netbox/ipam/api/views.py
@@ -475,10 +475,11 @@ def post(self, request, pk):
         vlangroup = get_object_or_404(VLANGroup.objects.restrict(request.user), pk=pk)
         available_vlans = vlangroup.get_available_vids()
         many = isinstance(request.data, list)
+        requested_vlans_data = request.data if many else [request.data]
 
         # Validate requested VLANs
         serializer = serializers.CreateAvailableVLANSerializer(
-            data=request.data if many else [request.data],
+            data=requested_vlans_data,
             many=True,
             context={
                 'request': request,
@@ -491,9 +492,7 @@ def post(self, request, pk):
                 status=status.HTTP_400_BAD_REQUEST
             )
 
-        requested_vlans = serializer.validated_data
-
-        for i, requested_vlan in enumerate(requested_vlans):
+        for i, requested_vlan in enumerate(requested_vlans_data):
             try:
                 requested_vlan['vid'] = available_vlans.pop(0)
                 requested_vlan['group'] = vlangroup.pk
@@ -505,9 +504,9 @@ def post(self, request, pk):
         # Initialize the serializer with a list or a single object depending on what was requested
         context = {'request': request}
         if many:
-            serializer = serializers.VLANSerializer(data=requested_vlans, many=True, context=context)
+            serializer = serializers.VLANSerializer(data=requested_vlans_data, many=True, context=context)
         else:
-            serializer = serializers.VLANSerializer(data=requested_vlans[0], context=context)
+            serializer = serializers.VLANSerializer(data=requested_vlans_data[0], context=context)
 
         # Create the new VLAN(s)
         if serializer.is_valid():
diff --git a/netbox/ipam/tests/test_api.py b/netbox/ipam/tests/test_api.py
index b6aeccc1a73..f7dfcacfd20 100644
--- a/netbox/ipam/tests/test_api.py
+++ b/netbox/ipam/tests/test_api.py
@@ -812,6 +812,12 @@ def setUpTestData(cls):
         )
         VLANGroup.objects.bulk_create(vlan_groups)
 
+        tenants = (
+            Tenant(name='Tenant 1', slug='tenant-1'),
+            Tenant(name='Tenant 2', slug='tenant-2'),
+        )
+        Tenant.objects.bulk_create(tenants)
+
     def test_list_available_vlans(self):
         """
         Test retrieval of all available VLANs within a group.
@@ -858,6 +864,7 @@ def test_create_single_available_vlan(self):
 
         data = {
             "name": "First VLAN",
+            "tenant": Tenant.objects.first().pk,
         }
         url = reverse('ipam-api:vlangroup-available-vlans', kwargs={'pk': vlangroup.pk})
         response = self.client.post(url, data, format='json', **self.header)
@@ -882,9 +889,12 @@ def test_create_multiple_available_vlans(self):
         VLAN.objects.bulk_create(vlans)
 
         data = (
-            {"name": "First VLAN"},
-            {"name": "Second VLAN"},
-            {"name": "Third VLAN"},
+            {"name": "First VLAN",
+                "tenant": Tenant.objects.first().pk},
+            {"name": "Second VLAN",
+                "tenant": Tenant.objects.first().pk},
+            {"name": "Third VLAN",
+                "tenant": Tenant.objects.last().pk},
         )
         url = reverse('ipam-api:vlangroup-available-vlans', kwargs={'pk': vlangroup.pk})
         response = self.client.post(url, data, format='json', **self.header)