diff --git a/netbox/ipam/forms/bulk_import.py b/netbox/ipam/forms/bulk_import.py
index cdac06e77..d17944674 100644
--- a/netbox/ipam/forms/bulk_import.py
+++ b/netbox/ipam/forms/bulk_import.py
@@ -571,6 +571,10 @@ class ServiceImportForm(NetBoxModelImportForm):
         to_field_name='name',
         help_text=_('Parent object name')
     )
+    parent_object_id = forms.IntegerField(
+        required=False,
+        help_text=_('Parent object ID'),
+    )
     protocol = CSVChoiceField(
         label=_('Protocol'),
         choices=ServiceProtocolChoices,
@@ -586,8 +590,7 @@ class ServiceImportForm(NetBoxModelImportForm):
     class Meta:
         model = Service
         fields = (
-            'parent_object_type', 'ipaddresses', 'name', 'protocol', 'ports', 'description', 'comments',
-            'tags', 'parent_object_id',
+            'ipaddresses', 'name', 'protocol', 'ports', 'description', 'comments', 'tags',
         )
 
     def __init__(self, data=None, *args, **kwargs):
@@ -619,16 +622,20 @@ class ServiceImportForm(NetBoxModelImportForm):
                 parent = parent_ct.model_class().objects.filter(id=parent_id).first()
                 self.cleaned_data['parent'] = parent
             else:
-                # If a parent object type is passed and we've made it to here, then raise a validation
-                # error since an associated parent object or parent object id has nto be passed
+                # If a parent object type is passed and we've made it here, then raise a validation
+                # error since an associated parent object or parent object id has not been passed
                 raise forms.ValidationError(
-                    _("One of parent or parent_object_id needs to be included with parent_object_type")
+                    _("One of parent or parent_object_id must be included with parent_object_type")
                 )
 
+        # making sure parent is defined. In cases where an import is resulting in an update, the
+        # import data might not include the parent object and so the above logic might not be
+        # triggered
+        parent = self.cleaned_data.get('parent')
         for ip_address in self.cleaned_data.get('ipaddresses', []):
             if not ip_address.assigned_object or getattr(ip_address.assigned_object, 'parent_object') != parent:
                 raise forms.ValidationError(
-                    _("{ip} is not assigned to this device/VM.").format(ip=ip_address)
+                    _("{ip} is not assigned to this parent.").format(ip=ip_address)
                 )
 
         return self.cleaned_data
diff --git a/netbox/ipam/migrations/0080_remove_service_device_virtual_machine_add_parent_gfk_index.py b/netbox/ipam/migrations/0080_remove_service_device_virtual_machine_add_parent_gfk_index.py
index a0d049d61..434e1317a 100644
--- a/netbox/ipam/migrations/0080_remove_service_device_virtual_machine_add_parent_gfk_index.py
+++ b/netbox/ipam/migrations/0080_remove_service_device_virtual_machine_add_parent_gfk_index.py
@@ -18,6 +18,18 @@ class Migration(migrations.Migration):
             model_name='service',
             name='virtual_machine',
         ),
+        migrations.AlterField(
+            model_name='service',
+            name='parent_object_id',
+            field=models.PositiveBigIntegerField(),
+        ),
+        migrations.AlterField(
+            model_name='service',
+            name='parent_object_type',
+            field=models.ForeignKey(
+                on_delete=models.deletion.PROTECT, related_name='+', to='contenttypes.contenttype'
+            ),
+        ),
         migrations.AddIndex(
             model_name='service',
             index=models.Index(
diff --git a/netbox/ipam/models/services.py b/netbox/ipam/models/services.py
index 39ad9d32a..2afd16076 100644
--- a/netbox/ipam/models/services.py
+++ b/netbox/ipam/models/services.py
@@ -68,13 +68,8 @@ class Service(ContactsMixin, ServiceBase, PrimaryModel):
         to='contenttypes.ContentType',
         on_delete=models.PROTECT,
         related_name='+',
-        blank=True,
-        null=True
-    )
-    parent_object_id = models.PositiveBigIntegerField(
-        blank=True,
-        null=True
     )
+    parent_object_id = models.PositiveBigIntegerField()
     parent = GenericForeignKey(
         ct_field='parent_object_type',
         fk_field='parent_object_id'
diff --git a/netbox/ipam/tests/test_filtersets.py b/netbox/ipam/tests/test_filtersets.py
index 8779741df..9c500e002 100644
--- a/netbox/ipam/tests/test_filtersets.py
+++ b/netbox/ipam/tests/test_filtersets.py
@@ -1258,9 +1258,24 @@ class IPAddressTestCase(TestCase, ChangeLoggedFilterSetTests):
         IPAddress.objects.bulk_create(ipaddresses)
 
         services = (
-            Service(name='Service 1', protocol=ServiceProtocolChoices.PROTOCOL_TCP, ports=[1]),
-            Service(name='Service 2', protocol=ServiceProtocolChoices.PROTOCOL_TCP, ports=[1]),
-            Service(name='Service 3', protocol=ServiceProtocolChoices.PROTOCOL_TCP, ports=[1]),
+            Service(
+                parent=devices[0],
+                name='Service 1',
+                protocol=ServiceProtocolChoices.PROTOCOL_TCP,
+                ports=[1],
+            ),
+            Service(
+                parent=devices[1],
+                name='Service 2',
+                protocol=ServiceProtocolChoices.PROTOCOL_TCP,
+                ports=[1],
+            ),
+            Service(
+                parent=devices[2],
+                name='Service 3',
+                protocol=ServiceProtocolChoices.PROTOCOL_TCP,
+                ports=[1],
+            ),
         )
         Service.objects.bulk_create(services)
         services[0].ipaddresses.add(ipaddresses[0])