diff --git a/utils/yangutils/src/test/resources/ListInvalidIdentifier.yang b/utils/yangutils/src/test/resources/ListInvalidIdentifier.yang
new file mode 100644
index 0000000..c5f6a3a
--- /dev/null
+++ b/utils/yangutils/src/test/resources/ListInvalidIdentifier.yang
@@ -0,0 +1,15 @@
+module Test {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix Ant;
+    list 1valid {
+        key "invalid-interval";
+        reference "RFC 6020";
+        leaf invalid-interval {
+            type "uint16";
+            units "seconds";
+            status current;
+            reference "RFC 6020";
+        }
+    }
+}
\ No newline at end of file