2.9.6.7 PtypMultipleString8 (0x101E) Value Encoding
Multi-valued string encodings start with an integer count encoding followed by the specified number of string value encodings. The count encoding is encoded in the same way that PtypInteger32 ([MS-OXCDATA] section 2.11.1) is encoded. The individual string encodings are encoded in the same way that PtypString8 ([MS-OXCDATA] section 2.11.1) is encoded. Strings MUST be case-insensitive. All values MUST be unique. Values can appear in any order. All strings MUST NOT be zero length or empty.
Properties whose data type is PtypEmbeddedTable ([MS-OXCDATA] section 2.11.1), and whose value represents references to any number of other Address Book objects, are encoded using the PtypMultipleString8 ([MS-OXCDATA] section 2.11.1) value encoding. Each string value MUST be a DN (3) to an Address Book object, which can be present in the OAB.