2.2.1.1.11 PidLidFileUnder Property
Type: PtypString ([MS-OXCDATA] section 2.11.1)
The PidLidFileUnder property ([MS-OXPROPS] section 2.132) specifies the name under which to file this contact when displaying a list of contacts. The client SHOULD treat this property as an empty string if it is missing from the Contact object. This property is optional.