2.2.8.7 PidNameKeywords Property
Type: PtypMultipleString ([MS-OXCDATA] section 2.11.1)
If this conversation is being categorized, the PidNameKeywords property ([MS-OXPROPS] section 2.451) SHOULD<27> be set to the list of categories that are being set on incoming E-mail objects in the conversation. Otherwise, this property SHOULD NOT be set.