diff --git a/backend/config/constants.js b/backend/config/constants.js
index 5895516..39913a3 100644
--- a/backend/config/constants.js
+++ b/backend/config/constants.js
@@ -15,7 +15,7 @@ constants.apiResultCodes = {
     ok:0,
     amazonError:1,
     databaseError:2,
-
+    IDLengthError:3,
 }
 
 constants.skillIDLength = 24;
diff --git a/backend/controllers/skill.js b/backend/controllers/skill.js
index 94cfecc..b292f8d 100644
--- a/backend/controllers/skill.js
+++ b/backend/controllers/skill.js
@@ -86,7 +86,7 @@ router.put ('/:id', bodyParser.json (), async (req, res, next) => {
         });
     }
   } else {
-    //no new skills for now
+    res.json ({result: constants.IDLengthError, message: ''});
   }
 });