diff --git a/vendor/github.com/opencord/voltha-lib-go/v3/pkg/adapters/common/request_handler.go b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/adapters/common/request_handler.go
index 78b8eb5..5b00887 100644
--- a/vendor/github.com/opencord/voltha-lib-go/v3/pkg/adapters/common/request_handler.go
+++ b/vendor/github.com/opencord/voltha-lib-go/v3/pkg/adapters/common/request_handler.go
@@ -658,3 +658,46 @@
 	}
 	return deviceId.Val, port, nil
 }
+
+func (rhp *RequestHandlerProxy) Child_device_lost(args []*ic.Argument) error {
+	if len(args) < 4 {
+		logger.Warn("invalid-number-of-args", log.Fields{"args": args})
+		return errors.New("invalid-number-of-args")
+	}
+
+	pDeviceId := &ic.StrType{}
+	pPortNo := &ic.IntType{}
+	onuID := &ic.IntType{}
+	fromTopic := &ic.StrType{}
+	for _, arg := range args {
+		switch arg.Key {
+		case "pDeviceId":
+			if err := ptypes.UnmarshalAny(arg.Value, pDeviceId); err != nil {
+				logger.Warnw("cannot-unmarshal-parent-deviceId", log.Fields{"error": err})
+				return err
+			}
+		case "pPortNo":
+			if err := ptypes.UnmarshalAny(arg.Value, pPortNo); err != nil {
+				logger.Warnw("cannot-unmarshal-port", log.Fields{"error": err})
+				return err
+			}
+		case "onuID":
+			if err := ptypes.UnmarshalAny(arg.Value, onuID); err != nil {
+				logger.Warnw("cannot-unmarshal-transaction-ID", log.Fields{"error": err})
+				return err
+			}
+		case kafka.FromTopic:
+			if err := ptypes.UnmarshalAny(arg.Value, fromTopic); err != nil {
+				logger.Warnw("cannot-unmarshal-from-topic", log.Fields{"error": err})
+				return err
+			}
+		}
+	}
+	//Update the core reference for that device
+	rhp.coreProxy.UpdateCoreReference(pDeviceId.Val, fromTopic.Val)
+	//Invoke the Child_device_lost API on the adapter
+	if err := rhp.adapter.Child_device_lost(pDeviceId.Val, uint32(pPortNo.Val), uint32(onuID.Val)); err != nil {
+		return status.Errorf(codes.NotFound, "%s", err.Error())
+	}
+	return nil
+}