I am trying to log few request and response parameters for debug purpose. I guess Global policy fragments with message-completed state is the best/suitable approach for that. But response status code and few context variables are not logged whenever customize error response executes. I need to log response status code for all transactions. can you help me? Also i believe Global policy fragments are asynchronous in nature, if not i have to do the logging asynchronously so not to increase transaction time. what is the best way to do that?