/enums/asset_field_type.proto 

--- v21/enums/asset_field_type.proto    2025-10-07 23:35:21.000000000 +0000
+++ v22/enums/asset_field_type.proto    2025-10-07 23:35:31.000000000 +0000
@@ -131,5 +131,8 @@

     // The asset is linked for use as related YouTube videos.
     RELATED_YOUTUBE_VIDEOS = 33;
+
+    // The asset is linked for use as a landing page preview image.
+    LANDING_PAGE_PREVIEW = 38;
   }
 }