See Manage Device Commissioning (Echelon) Page 2 on page 2-3 for the business process diagram associated with this activity.Actor/Role: SGGDescription: SGG evaluates if Meter is already registered in Head-End system. If Meter is not registered in Head-End, SGG initiates Add Meter processing method and alternatively if Meter is already registered in Head-End but if it's Device Id is not present in SGG, it invokes Retrieve Meter Identifier processing method.