/errors/campaign_error.proto 

--- v22/errors/campaign_error.proto 2026-01-23 15:36:21.000000000 +0000
+++ v23/errors/campaign_error.proto 2026-01-23 15:36:26.000000000 +0000
@@ -394,5 +394,11 @@

     // This feature is only available for campaigns with AI Max enabled.
     AI_MAX_MUST_BE_ENABLED = 110;
+
+    // Duration too long for total budget.
+    DURATION_TOO_LONG_FOR_TOTAL_BUDGET = 111;
+
+    // Campaigns with total budgets must have end date/time specified.
+    END_DATE_TIME_REQUIRED_FOR_TOTAL_BUDGET = 112;
   }
 }