diff --git a/tempest/api/identity/admin/v3/test_tokens.py b/tempest/api/identity/admin/v3/test_tokens.py
index 1a9502a..a40c3cd 100644
--- a/tempest/api/identity/admin/v3/test_tokens.py
+++ b/tempest/api/identity/admin/v3/test_tokens.py
@@ -96,18 +96,18 @@
         self.assertEqual(['password'], token_auth['token']['methods'])
         self.assertEqual(user['id'], token_auth['token']['user']['id'])
         self.assertEqual(user['name'], token_auth['token']['user']['name'])
-        self.assertEqual('default',
+        self.assertEqual(CONF.identity.default_domain_id,
                          token_auth['token']['user']['domain']['id'])
-        self.assertEqual('Default',
-                         token_auth['token']['user']['domain']['name'])
+        self.assertIsNotNone(token_auth['token']['user']['domain']['name'])
         self.assertNotIn('catalog', token_auth['token'])
         self.assertNotIn('project', token_auth['token'])
         self.assertNotIn('roles', token_auth['token'])
 
         # Use the unscoped token to get a scoped token.
-        token_auth = self.token.auth(token=token_id,
-                                     project_name=project1_name,
-                                     project_domain_name='Default')
+        token_auth = self.token.auth(
+            token=token_id,
+            project_name=project1_name,
+            project_domain_id=CONF.identity.default_domain_id)
         token1_id = token_auth.response['x-subject-token']
 
         self.assertEqual(orig_expires_at, token_auth['token']['expires_at'],
@@ -122,10 +122,9 @@
                          token_auth['token']['project']['id'])
         self.assertEqual(project1['name'],
                          token_auth['token']['project']['name'])
-        self.assertEqual('default',
+        self.assertEqual(CONF.identity.default_domain_id,
                          token_auth['token']['project']['domain']['id'])
-        self.assertEqual('Default',
-                         token_auth['token']['project']['domain']['name'])
+        self.assertIsNotNone(token_auth['token']['project']['domain']['name'])
         self.assertEqual(1, len(token_auth['token']['roles']))
         self.assertEqual(role['id'], token_auth['token']['roles'][0]['id'])
         self.assertEqual(role['name'], token_auth['token']['roles'][0]['name'])
@@ -134,9 +133,10 @@
         self.client.delete_token(token1_id)
 
         # Now get another scoped token using the unscoped token.
-        token_auth = self.token.auth(token=token_id,
-                                     project_name=project2_name,
-                                     project_domain_name='Default')
+        token_auth = self.token.auth(
+            token=token_id,
+            project_name=project2_name,
+            project_domain_id=CONF.identity.default_domain_id)
 
         self.assertEqual(project2['id'],
                          token_auth['token']['project']['id'])
diff --git a/tempest/api/identity/admin/v3/test_trusts.py b/tempest/api/identity/admin/v3/test_trusts.py
index 0a163fc..34b281a 100644
--- a/tempest/api/identity/admin/v3/test_trusts.py
+++ b/tempest/api/identity/admin/v3/test_trusts.py
@@ -47,7 +47,8 @@
         # create a project that trusts will be granted on
         trustor_project_name = data_utils.rand_name(name='project')
         project = self.projects_client.create_project(
-            trustor_project_name, domain_id='default')['project']
+            trustor_project_name,
+            domain_id=CONF.identity.default_domain_id)['project']
         self.trustor_project_id = project['id']
         self.assertIsNotNone(self.trustor_project_id)
 
@@ -62,7 +63,7 @@
             password=trustor_password,
             email=u_email,
             project_id=self.trustor_project_id,
-            domain_id='default')['user']
+            domain_id=CONF.identity.default_domain_id)['user']
         self.trustor_user_id = user['id']
 
         # And two roles, one we'll delegate and one we won't
@@ -96,10 +97,10 @@
             identity_version='v3',
             username=trustor_username,
             password=trustor_password,
-            user_domain_id='default',
+            user_domain_id=CONF.identity.default_domain_id,
             tenant_name=trustor_project_name,
-            project_domain_id='default',
-            domain_id='default')
+            project_domain_id=CONF.identity.default_domain_id,
+            domain_id=CONF.identity.default_domain_id)
         os = clients.Manager(credentials=creds)
         self.trustor_client = os.trusts_client
 
diff --git a/tempest/api/identity/admin/v3/test_users_negative.py b/tempest/api/identity/admin/v3/test_users_negative.py
index 09d1b9b..11dcdb0 100644
--- a/tempest/api/identity/admin/v3/test_users_negative.py
+++ b/tempest/api/identity/admin/v3/test_users_negative.py
@@ -14,10 +14,13 @@
 #    under the License.
 
 from tempest.api.identity import base
+from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
 
+CONF = config.CONF
+
 
 class UsersNegativeTest(base.BaseIdentityV3AdminTest):
 
@@ -43,4 +46,4 @@
         self.assertRaises(lib_exc.Unauthorized, self.token.auth,
                           username=user['name'],
                           password=password,
-                          user_domain_id='default')
+                          user_domain_id=CONF.identity.default_domain_id)