diff --git a/osm_nbi/validation.py b/osm_nbi/validation.py
index 0ba0a5fdcedc42e3e524a3d38c1aa3a6bd7c82ad..75d16cad0ab1628f44f2f6af82e1bb5519735894 100644
--- a/osm_nbi/validation.py
+++ b/osm_nbi/validation.py
@@ -160,6 +160,7 @@ ns_instantiate_vdu = {
         "vim-flavor-id": name_schema,
         "instance_name": name_schema,
         "vim-flavor-name": name_schema,
+        "security-group-name": name_schema,
         "volume": {
             "type": "array",
             "minItems": 1,