/errors/quota_error.proto 

--- v17/errors/quota_error.proto    2024-10-17 03:48:50.000000000 +0000
+++ v18/errors/quota_error.proto    2024-10-17 03:48:55.000000000 +0000
@@ -45,5 +45,13 @@

     // Too many requests in a short amount of time.
     RESOURCE_TEMPORARILY_EXHAUSTED = 4;
+
+    // Too many expensive requests from query pattern over a short amount of
+    // time.
+    EXCESSIVE_SHORT_TERM_QUERY_RESOURCE_CONSUMPTION = 5;
+
+    // Too many expensive requests from query pattern over an extended duration
+    // of time.
+    EXCESSIVE_LONG_TERM_QUERY_RESOURCE_CONSUMPTION = 6;
   }
 }