CME Group amended its Market Regulation Advisory Notice related to its Tag 50 identification code required for electronic orders, to make clear that such tags might not have to be registered with it in connection with reduced fee programs that specifically exempt such registration. Currently Tag 50s of all employees or contractors of clearing members and persons associated with reduced fee programs, among other persons, must be registered with CME Group. The revised MRAN will be effective June 5 absent Commodity Futures Trading Commission objection.