/enums/asset_automation_type.proto 

--- v20/enums/asset_automation_type.proto   2025-08-05 14:39:37.000000000 +0000
+++ v21/enums/asset_automation_type.proto   2025-08-05 14:39:43.000000000 +0000
@@ -63,5 +63,12 @@
     // Generates video enhancements (vertical and shorter videos) for PMax
     // campaigns. Opted in by default.
     GENERATE_ENHANCED_YOUTUBE_VIDEOS = 6;
+
+    // Controls automation for text assets related to Final URL expansion. This
+    // includes automatically creating dynamic landing pages from the final URL
+    // and generating text assets from the content of those landing pages. This
+    // setting only applies to Search campaigns, and advertisers are opted-out
+    // by default.
+    FINAL_URL_EXPANSION_TEXT_ASSET_AUTOMATION = 11;
   }
 }