Looking for a sequence of events supplier cleanup and documented process if available

Been assigned a project for supplier cleanup in Oracle.  In an effort to not reinvent the wheel looking for documentation on sequence of steps typically used by folks that periodically perform supplier cleanup, etc.  For example how often it is done and is there a sequence of events that need to take place.  i.e. any verification process, notifications to suppliers that have no activity for a certain period of time, etc.  Any info would be greatly appreciated.