/errors/conversion_value_rule_error.proto

--- v17/errors/conversion_value_rule_error.proto    2024-10-17 03:48:49.000000000 +0000
+++ v18/errors/conversion_value_rule_error.proto    2024-10-17 03:48:54.000000000 +0000
@@ -84,5 +84,9 @@

     // When a value rule is created, it shouldn't have REMOVED status.
     CANNOT_ADD_RULE_WITH_STATUS_REMOVED = 13;
+
+    // The value rule's itinerary condition contains invalid travel start day,
+    // it contains no day of week.
+    NO_DAY_OF_WEEK_SELECTED = 14;
   }
 }