Where is the Rule Runtime Log located for Enhanced Business Rules?
Oracle B2C Service, Browser UI Enhanced Business Rules
Once you migrate to the Browser UI Enhanced Business Rules in the Browser UI, you will want to view the Rule Runtime Logs when determining which rules have been matched against your incident (or other business object). To access the Rule Runtime Log folder to view the report options available, go to Navigation -> Analytics -> Reports Explorer -> search on "rule runtime log". You will see the list of rule runtime log reports available.
The primary report used by agents is the Rule Runtime Log report which allows you to search by i_id (incident id). The i_id (incident ID) can be seen from the incidents' workspace tab (when viewing an incident) as you hover over the incident tab.
The output in these logs is similar to the rule log you were used to seeing in the .NET agent desktop.
Further details regarding Enhanced Business Rules online resource can be found here: View the Rule Runtime Log.
Related answer for test sites: Answer ID 11972: Rule Runtime Log (Audit Logs) for Enhanced Business Rules are empty on my test site