diff --git a/nova/api/openstack/placement/handlers/allocation_candidate.py b/nova/api/openstack/placement/handlers/allocation_candidate.py
index 56635f54c..4ed1fec58 100644
--- a/nova/api/openstack/placement/handlers/allocation_candidate.py
+++ b/nova/api/openstack/placement/handlers/allocation_candidate.py
@@ -21,6 +21,7 @@ from oslo_utils import timeutils
 import webob
 
 from nova.api.openstack.placement import microversion
+from nova.api.openstack.placement.schemas import allocation_candidate as schema
 from nova.api.openstack.placement import util
 from nova.api.openstack.placement import wsgi_wrapper
 from nova import exception
@@ -30,21 +31,6 @@ from nova.objects import resource_provider as rp_obj
 
 LOG = logging.getLogger(__name__)
 
-# Represents the allowed query string parameters to the GET
-# /allocation_candidates API call
-_GET_SCHEMA_1_10 = {
-    "type": "object",
-    "properties": {
-        "resources": {
-            "type": "string"
-        },
-    },
-    "required": [
-        "resources",
-    ],
-    "additionalProperties": False,
-}
-
 
 def _transform_allocation_requests_dict(alloc_reqs):
     """Turn supplied list of AllocationRequest objects into a list of
@@ -208,8 +194,7 @@ def list_allocation_candidates(req):
     """
     context = req.environ['placement.context']
     want_version = req.environ[microversion.MICROVERSION_ENVIRON]
-    schema = _GET_SCHEMA_1_10
-    util.validate_query_params(req, schema)
+    util.validate_query_params(req, schema.GET_SCHEMA_1_10)
 
     requests = util.parse_qs_request_groups(req.GET)
 
diff --git a/nova/api/openstack/placement/schemas/allocation_candidate.py b/nova/api/openstack/placement/schemas/allocation_candidate.py
new file mode 100644
index 000000000..0d7766cc7
--- /dev/null
+++ b/nova/api/openstack/placement/schemas/allocation_candidate.py
@@ -0,0 +1,27 @@
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+"""Placement API schemas for getting allocation candidates."""
+
+# Represents the allowed query string parameters to the GET
+# /allocation_candidates API call
+GET_SCHEMA_1_10 = {
+    "type": "object",
+    "properties": {
+        "resources": {
+            "type": "string"
+        },
+    },
+    "required": [
+        "resources",
+    ],
+    "additionalProperties": False,
+}