diff --git a/draft-ietf-netmod-schema-mount.org b/draft-ietf-netmod-schema-mount.org
index 777a67f..a58178c 100644
--- a/draft-ietf-netmod-schema-mount.org
+++ b/draft-ietf-netmod-schema-mount.org
@@ -298,6 +298,9 @@ Each entry of the "schema" list contains
   (and revisions etc.) that are implemented or imported in the mounted
   schema;
 
+- an identifier representing the listed YANG modules that parallels
+  module-set-id used in YANG library;
+
 - (optionally) a new "mount-point" list that applies to mount points
   defined within the mounted schema.
 
diff --git a/ietf-yang-schema-mount.yang b/ietf-yang-schema-mount.yang
index 38dce5d..ef24b2c 100644
--- a/ietf-yang-schema-mount.yang
+++ b/ietf-yang-schema-mount.yang
@@ -242,8 +242,37 @@ module ietf-yang-schema-mount {
         description
           "Arbitrary name of the schema entry.";
       }
+      leaf module-set-id {
+        type string;
+        mandatory true;
+        description
+          "Contains a server-specific identifier representing
+           the current set of modules and submodules identified
+           in 'module-list'.  The server MUST change the value of
+           this leaf when the information represented by 'module-list'
+           changes.";
+       }
       uses yanglib:module-list;
       uses mount-point-list;
     }
   }
+
+  /*
+   * Notifications
+    */
+  notification yang-schema-mount-change {
+    description
+      "Generated when the set of modules and submodules supported
+       for a particular mount point schema has changed.";
+    leaf module-set-id {
+      type leafref {
+        path "/yangmnt:schema-mounts/schema/yangmnt:module-set-id";
+      }
+      mandatory true;
+      description
+        "Contains the module-set-id value representing the
+         set of modules and submodules supported for the identified
+         schema the time the notification is generated.";
+    }
+  }
 }
diff --git a/schema-mounts-ex1-lne.json b/schema-mounts-ex1-lne.json
index 6aeab39..f9b7621 100644
--- a/schema-mounts-ex1-lne.json
+++ b/schema-mounts-ex1-lne.json
@@ -20,6 +20,7 @@
   "schema": [
     {
       "name": "ni-schema",
+      "module-set-id": "4c9805268bc1309be9189ed51d1cadb474068c8b",
       "module": [
         {
           "name": "ietf-ipv4-unicast-routing",