diff --git a/Backend/mocked-services/src/main/resources/static/js/datatransfer.js b/Backend/mocked-services/src/main/resources/static/js/datatransfer.js
index fcbea4d..e2241b1 100644
--- a/Backend/mocked-services/src/main/resources/static/js/datatransfer.js
+++ b/Backend/mocked-services/src/main/resources/static/js/datatransfer.js
@@ -281,6 +281,8 @@ async function fetchUUIDCheck(givenUUID , strategy){
 
 function checkUUIDChars(uuid) {
     uuid.replace(/ /g,'')
+    if (uuid.length > 128)
+        return "invalid";
     console.log("UUID in check: " + uuid);
     const regex = new RegExp("^[A-z0-9-]+$");