[CORD-3057] Integrating the OSS Service

Change-Id: If202560447d6eecb4bab725206a397e6390dc414
diff --git a/xos/synchronizer/steps/sync_volt_service_instance.py b/xos/synchronizer/steps/sync_volt_service_instance.py
index 4d1f90f..98a5b92 100644
--- a/xos/synchronizer/steps/sync_volt_service_instance.py
+++ b/xos/synchronizer/steps/sync_volt_service_instance.py
@@ -40,6 +40,8 @@
         log.info("Synching OLTServiceInstance", object=str(o), **o.tologdict())
 
         c_tag = si.get_westbound_service_instance_properties("c_tag")
+
+        # TODO understand if this can have a better modeling (VOLTHA should know this info for an ONU without manually inserting it in the subscriber)
         uni_port_id = si.get_westbound_service_instance_properties("uni_port_id")
 
         onu_device_name = si.get_westbound_service_instance_properties("onu_device")