/errors/smart_campaign_error.proto 

--- v23/errors/smart_campaign_error.proto   2026-06-18 21:38:47.000000000 +0000
+++ v24/errors/smart_campaign_error.proto   2026-06-18 21:38:54.000000000 +0000
@@ -58,5 +58,8 @@

     // The final URL could not be crawled.
     FINAL_URL_NOT_CRAWLABLE = 8;
+
+    // New Smart campaigns cannot be created.
+    CREATION_FAILED = 9;
   }
 }