diff --git a/protos/dmi/hw_events_mgmt_service.proto b/protos/dmi/hw_events_mgmt_service.proto
index b4fceb9..1a7e0b0 100644
--- a/protos/dmi/hw_events_mgmt_service.proto
+++ b/protos/dmi/hw_events_mgmt_service.proto
@@ -16,6 +16,12 @@
     // Events from the Transceivers
     EVENT_TRANSCEIVER_PLUG_OUT = 100;
     EVENT_TRANSCEIVER_PLUG_IN = 101;
+    // The threshold based events on the transceivers should be configured on
+    // the port components of that transceiver and not on the transceiver
+    // component itself. This is because there could be different thresholds
+    // on the different ports of a transceiver (for example for a transceiver of
+    // type COMBO_GPON_XGSPON the power thresholds could be different for the
+    // GPON and XGSPON ports)
     EVENT_TRANSCEIVER_VOLTAGE_ABOVE_THRESHOLD = 102;
     EVENT_TRANSCEIVER_VOLTAGE_BELOW_THRESHOLD = 103;
     EVENT_TRANSCEIVER_TEMPERATURE_ABOVE_THRESHOLD = 104;
@@ -75,11 +81,16 @@
 }
 
 message ValueType {
+    // For val no multiples of units shall be used.
+    // For example, for memory val should be in bytes and not in kilobytes or any
+    // other multiple of the unit byte.
     oneof val{
         int64 int_val = 1;
         uint64 uint_val = 2;
         float float_val = 3;
     }
+
+    DataValueType typeOfVal = 4;
 }
 
 message WaterMarks {