2.2.1.7 PidLidReminderFileParameter Property
Type: PtypString ([MS-OXCDATA] section 2.11.1)
The PidLidReminderFileParameter property ([MS-OXPROPS] section 2.219) SHOULD specify the full path (but MAY specify only the file name) of the sound<1> that a client SHOULD play when the reminder for the Message object becomes overdue. If this property is not present, the client can use a default value.