3.2.5.2.1 Receiving the MetaTagIdsetGiven ICS State Property
The property tag for this property suggests that it is of type PtypInteger32 ([MS-OXCDATA] section 2.11.1), but the data MUST be handled as PtypBinary ([MS-OXCDATA] section 2.11.1) data by servers. Servers SHOULD send the MetaTagIdsetGiven property (section 2.2.1.1.1) with a property tag that defines it as PtypInteger32; however, servers SHOULD accept this property when the property tag identifies it as PtypInteger32 or PtypBinary.
The server ignores this property in synchronization upload operations and does not download it back to the client in the final ICS state obtained for them through the RopSynchronizationGetTransferState ROP (section 2.2.3.2.3.1).If the client failed to remove this property before uploading the initial ICS state, there is no effect on the server.