diff --git a/framework/udc-extended-api/system-removed.txt b/framework/udc-extended-api/system-removed.txt
new file mode 100644
index 0000000..d802177
--- /dev/null
+++ b/framework/udc-extended-api/system-removed.txt
@@ -0,0 +1 @@
+// Signature format: 2.0