diff --git a/src/telemetry_frontend/tests/Messages.py b/src/telemetry_frontend/tests/Messages.py
new file mode 100644
index 0000000000000000000000000000000000000000..86b454004870a95639a424d4d9c62dc28daff92b
--- /dev/null
+++ b/src/telemetry_frontend/tests/Messages.py
@@ -0,0 +1,30 @@
+# Copyright 2022-2023 ETSI TeraFlowSDN - TFS OSG (https://tfs.etsi.org/)
+#
+# 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.
+
+from common.proto import telemetry_frontend_pb2
+# from common.proto.kpi_manager_pb2 import kpi_id
+# from common.proto.kpi_sample_types_pb2 import KpiSampleType
+
+def collector_id():
+    _collector_id                   = telemetry_frontend_pb2.CollectorId()
+    _collector_id.collector_id.uuid = str(1)
+    return _collector_id
+
+def create_collector_request(coll_id_str):
+    _create_collector_request                      = telemetry_frontend_pb2.Collector()
+    _create_collector_request.collector_id.uuid    = str(coll_id_str)
+    _create_collector_request.kpi_id.kpi_uuid.uuid = 'KPIid' + str(coll_id_str)
+    _create_collector_request.duration_s           = float(-1)
+    _create_collector_request.interval_s           = float(-1)
+    return _create_collector_request