/errors/benchmarks_error.proto 

--- v24/errors/benchmarks_error.proto   2026-09-23 01:11:56.000000000 +0000
+++ v25/errors/benchmarks_error.proto   2026-09-23 01:12:00.000000000 +0000
@@ -42,5 +42,10 @@
     // reduce complexity, try selecting a more granular benchmarks source, a
     // smaller date range, or a smaller set of products.
     MAX_QUERY_COMPLEXITY_EXCEEDED = 2;
+
+    // No metrics were found for the given combination of inputs (vertical or
+    // categories supplied, location, date range, and products). Try selecting
+    // a different combination of inputs.
+    NO_METRICS_FOUND = 3;
   }
 }