diff --git a/tempest/api/identity/admin/v3/test_endpoints.py b/tempest/api/identity/admin/v3/test_endpoints.py
index 2fd7369..429e2e3 100644
--- a/tempest/api/identity/admin/v3/test_endpoints.py
+++ b/tempest/api/identity/admin/v3/test_endpoints.py
@@ -33,9 +33,9 @@
         s_name = data_utils.rand_name('service')
         s_type = data_utils.rand_name('type')
         s_description = data_utils.rand_name('description')
-        cls.service_data =\
-            cls.service_client.create_service(s_name, s_type,
-                                              description=s_description)
+        cls.service_data = (
+            cls.service_client.create_service(name=s_name, type=s_type,
+                                              description=s_description))
         cls.service_data = cls.service_data['service']
         cls.service_id = cls.service_data['id']
         cls.service_ids.append(cls.service_id)
@@ -112,9 +112,9 @@
         s_name = data_utils.rand_name('service')
         s_type = data_utils.rand_name('type')
         s_description = data_utils.rand_name('description')
-        service2 =\
-            self.service_client.create_service(s_name, s_type,
-                                               description=s_description)
+        service2 = (
+            self.service_client.create_service(name=s_name, type=s_type,
+                                               description=s_description))
         service2 = service2['service']
         self.service_ids.append(service2['id'])
         # Updating endpoint with new values
diff --git a/tempest/api/identity/admin/v3/test_endpoints_negative.py b/tempest/api/identity/admin/v3/test_endpoints_negative.py
index 5aa90a5..8f9bf2a 100644
--- a/tempest/api/identity/admin/v3/test_endpoints_negative.py
+++ b/tempest/api/identity/admin/v3/test_endpoints_negative.py
@@ -37,7 +37,7 @@
         s_type = data_utils.rand_name('type')
         s_description = data_utils.rand_name('description')
         cls.service_data = (
-            cls.service_client.create_service(s_name, s_type,
+            cls.service_client.create_service(name=s_name, type=s_type,
                                               description=s_description)
             ['service'])
         cls.service_id = cls.service_data['id']
diff --git a/tempest/api/identity/admin/v3/test_services.py b/tempest/api/identity/admin/v3/test_services.py
index dfb03df..d1595dd 100644
--- a/tempest/api/identity/admin/v3/test_services.py
+++ b/tempest/api/identity/admin/v3/test_services.py
@@ -37,7 +37,7 @@
         serv_type = data_utils.rand_name('type')
         desc = data_utils.rand_name('description')
         create_service = self.service_client.create_service(
-            serv_type, name=name, description=desc)['service']
+            type=serv_type, name=name, description=desc)['service']
         self.addCleanup(self._del_service, create_service['id'])
         self.assertIsNotNone(create_service['id'])
 
@@ -68,7 +68,7 @@
         name = data_utils.rand_name('service')
         serv_type = data_utils.rand_name('type')
         service = self.service_client.create_service(
-            serv_type, name=name)['service']
+            type=serv_type, name=name)['service']
         self.addCleanup(self.service_client.delete_service, service['id'])
         self.assertIn('id', service)
         expected_data = {'name': name, 'type': serv_type}
@@ -82,7 +82,7 @@
             name = data_utils.rand_name('service')
             serv_type = data_utils.rand_name('type')
             create_service = self.service_client.create_service(
-                serv_type, name=name)['service']
+                type=serv_type, name=name)['service']
             self.addCleanup(self.service_client.delete_service,
                             create_service['id'])
             service_ids.append(create_service['id'])
diff --git a/tempest/services/identity/v3/json/service_client.py b/tempest/services/identity/v3/json/service_client.py
index 7af6209..3dbfe5e 100644
--- a/tempest/services/identity/v3/json/service_client.py
+++ b/tempest/services/identity/v3/json/service_client.py
@@ -13,6 +13,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+"""
+http://developer.openstack.org/api-ref-identity-v3.html#service-catalog-v3
+"""
+
 from oslo_serialization import jsonutils as json
 
 from tempest.common import service_client
@@ -22,17 +26,12 @@
     api_version = "v3"
 
     def update_service(self, service_id, **kwargs):
-        """Updates a service."""
-        body = self.show_service(service_id)['service']
-        name = kwargs.get('name', body['name'])
-        type = kwargs.get('type', body['type'])
-        desc = kwargs.get('description', body['description'])
-        patch_body = {
-            'description': desc,
-            'type': type,
-            'name': name
-        }
-        patch_body = json.dumps({'service': patch_body})
+        """Updates a service.
+
+        Available params: see http://developer.openstack.org/
+                              api-ref-identity-v3.html#updateService
+        """
+        patch_body = json.dumps({'service': kwargs})
         resp, body = self.patch('services/%s' % service_id, patch_body)
         self.expected_success(200, resp.status)
         body = json.loads(body)
@@ -46,15 +45,13 @@
         body = json.loads(body)
         return service_client.ResponseBody(resp, body)
 
-    def create_service(self, serv_type, name=None, description=None,
-                       enabled=True):
-        body_dict = {
-            'name': name,
-            'type': serv_type,
-            'enabled': enabled,
-            'description': description,
-        }
-        body = json.dumps({'service': body_dict})
+    def create_service(self, **kwargs):
+        """Creates a service.
+
+        Available params: see http://developer.openstack.org/
+                              api-ref-identity-v3.html#createService
+        """
+        body = json.dumps({'service': kwargs})
         resp, body = self.post("services", body)
         self.expected_success(201, resp.status)
         body = json.loads(body)