Data type: PtypBoolean ([MS-OXCDATA] section 2.11.1)

The PidTagAddressBookIsMaster property ([MS-OXPROPS] section 2.536) is TRUE (0x01) if it is possible to create Address Book objects in that container, and FALSE (0x00) otherwise. The value does not pertain to parent containers or subcontainers of this container.

Because this property applies to a container in the hierarchy table, it is not present on objects in an offline address book (OAB). An OAB has its own structure for maintaining the hierarchy, using the OAB Public Folder Retrieval Protocol, as specified in [MS-OXPFOAB].