diff --git a/rw_core/core/api/grpc_nbi_handler.go b/rw_core/core/api/grpc_nbi_handler.go
index 1c296dd..0bacb33 100755
--- a/rw_core/core/api/grpc_nbi_handler.go
+++ b/rw_core/core/api/grpc_nbi_handler.go
@@ -805,3 +805,8 @@
 	logger.Debugw("Omci_test_Request", log.Fields{"id": omcitestrequest.Id, "uuid": omcitestrequest.Uuid})
 	return handler.deviceMgr.StartOmciTest(ctx, omcitestrequest)
 }
+
+func (handler *NBIHandler) GetExtValue(ctx context.Context, valueparam *voltha.ValueSpecifier) (*voltha.ReturnValues, error) {
+	log.Debugw("GetValue-request", log.Fields{"onu-id": valueparam.Id})
+	return nil, errors.New("UnImplemented")
+}