diff --git a/modules/unifiedIdSystem.js b/modules/unifiedIdSystem.js
index 3db4003c424..bc033f37992 100644
--- a/modules/unifiedIdSystem.js
+++ b/modules/unifiedIdSystem.js
@@ -18,6 +18,10 @@ export const unifiedIdSubmodule = {
    * @type {string}
    */
   name: MODULE_NAME,
+  /**
+   * required for the gdpr enforcement module
+   */
+  gvlid: 21,
   /**
    * decode the stored id value for passing to bid requests
    * @function