The offical way is to greate two different business rule sets. One for Warnings and one for Errors. But this doesn’t make sense since in the background a rule feedback can be info, warning, success or error.
Everything is available in the result-set but there is no method getRuleFeedbackType(). If just this method would have been implemented, it would be possible to navigate thru the result set and decide if to show if it is a warning