diff --git a/api/@ohos.arkui.observer.static.d.ets b/api/@ohos.arkui.observer.static.d.ets
index f2f79f87feddb8666e938e43cae6370e2533b3a9..234c6bd9b5e89e18e9f6fdcc7e6d32c4a004a48d 100644
--- a/api/@ohos.arkui.observer.static.d.ets
+++ b/api/@ohos.arkui.observer.static.d.ets
@@ -322,6 +322,14 @@ declare namespace uiObserver {
          * @since 20
          */
         pathStack: NavPathStack;
+        /**
+        * The uniqueId of the navigation.
+        *
+        * @type { ?int }
+        * @syscap SystemCapability.ArkUI.ArkUI.Full
+        * @since 20
+        */
+        uniqueId?: int;
     }
     /**
      * ScrollEvent info.