diff --git a/cfg_checker/common/const.py b/cfg_checker/common/const.py
index f1f69ae..1ae2bba 100644
--- a/cfg_checker/common/const.py
+++ b/cfg_checker/common/const.py
@@ -43,6 +43,8 @@
     VERSION_NA: "no status"
 }
 
+uknown_code = "unk"
+
 all_roles_map = {
     "apt": "repository",
     "bmk": "validation",
@@ -60,5 +62,6 @@
     "mtr": "stacklight_metering",
     "osd": "storage_node",
     "prx": "proxy",
-    "rgw": "storage_rados"
+    "rgw": "storage_rados",
+    "unk": "uknown"
 }