2.2.2.2.1.7 PidTagParentEntryId Property

Type: PtypBinary ([MS-OXCDATA] section 2.11.1)

The PidTagParentEntryId property ([MS-OXPROPS] section 2.858) contains a Folder EntryID structure, as specified in [MS-OXCDATA] section 2.2.4.1, that specifies the entry ID of the folder that contains the message or subfolder.