diff --git a/src/grpc_client/KEYS.reference.py b/src/grpc_client/KEYS.reference.py
new file mode 100644
index 0000000..fd8c776
--- /dev/null
+++ b/src/grpc_client/KEYS.reference.py
@@ -0,0 +1,75 @@
+# Copyright 2017-present Open Networking Foundation
+#
+# 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.
+
+#########################################################################
+#                                                                       #
+# This file is here for reference, the used one is generate by xos-genx #
+#                                                                       #
+#########################################################################
+
+TOSCA_KEYS = {
+    'XOSBase': [],
+    'User': ['email'],
+    'Privilege': [],
+    'AddressPool': ['name'],
+    'Controller': ['name'],
+    'ControllerImages': [],
+    'ControllerNetwork': [],
+    'ControllerRole': [],
+    'ControllerSite': [],
+    'ControllerPrivilege': [],
+    'ControllerSitePrivilege': [],
+    'ControllerSlice': [],
+    'ControllerSlicePrivilege': [],
+    'ControllerUser': [],
+    'Deployment': ['name'],
+    'DeploymentPrivilege': [],
+    'DeploymentRole': [],
+    'Diag': ['name'],
+    'Flavor': ['name'],
+    'Image': ['name'],
+    'ImageDeployments': [],
+    'Instance': ['name'],
+    'Network': ['name'],
+    'NetworkParameter': [],
+    'NetworkParameterType': ['name'],
+    'NetworkSlice': ['network', 'slice'],
+    'NetworkTemplate': ['name'],
+    'Node': ['name'],
+    'NodeLabel': ['name'],
+    'Port': [],
+    'Role': [],
+    'Service': ['name'],
+    'ServiceAttribute': ['name'],
+    'ServiceDependency': ['provider_service'],
+    'ServiceMonitoringAgentInfo': ['name'],
+    'ServicePrivilege': [],
+    'ServiceRole': [],
+    'Site': ['name'],
+    'SiteDeployment': ['site', 'deployment'],
+    'SitePrivilege': ['site', 'role'],
+    'SiteRole': [],
+    'Slice': ['name'],
+    'SlicePrivilege': [],
+    'SliceRole': [],
+    'Tag': ['name'],
+    'InterfaceType': ['name'],
+    'ServiceInterface': ['service', 'interface_type'],
+    'ServiceInstance': ['name'],
+    'ServiceInstanceLink': ['provider_service_instance'],
+    'ServiceInstanceAttribute': ['name'],
+    'TenantWithContainer': ['name'],
+    'XOS': ['name'],
+    'XOSGuiExtension': ['name'],
+}
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