/errors/asset_group_error.proto 

--- v25/errors/asset_group_error.proto  2026-10-26 16:32:21.000000000 +0000
+++ v26/errors/asset_group_error.proto  2026-10-26 16:32:26.000000000 +0000
@@ -88,5 +88,9 @@
     // The asset group cannot be removed because it's the last one in the
     // campaign.
     CANNOT_REMOVE_ALL_ASSET_GROUPS_FROM_CAMPAIGN = 18;
+
+    // The category specified in LocalServicesInfo is not supported for Local
+    // Services Performance Max campaigns.
+    UNSUPPORTED_LOCAL_SERVICES_CATEGORY = 19;
   }
 }