/resources/change_status.proto 

--- v17/resources/change_status.proto   2024-08-06 12:42:06.000000000 +0000
+++ v17-1/resources/change_status.proto 2024-08-06 12:42:16.000000000 +0000
@@ -198,4 +198,12 @@
       type: "googleads.googleapis.com/CombinedAudience"
     }
   ];
+
+  // Output only. The AssetGroup affected by this change.
+  string asset_group = 41 [
+    (google.api.field_behavior) = OUTPUT_ONLY,
+    (google.api.resource_reference) = {
+      type: "googleads.googleapis.com/AssetGroup"
+    }
+  ];
 }