By default, this folder can be located under "C:\ProgramData\Symantec\SMP\"
See also:
KB 180372 "Where is the CoreSettings.config file for Symantec Management Platform 7.1 stored?"
KB 180373 "Where are the event queues (EvtQueue, EvtQFast, etc) for Symantec Management Platform located?"
KB 180287 "Where are the Symantec Installation Manager and Symantec Management Platform 7.1 log files stored?"