3.3.5.2.2 Use Online Mode ROPs
In this approach, clients upload objects created in their local replica by using the regular, non-synchronization ROPs, such as RopCreateFolder or RopCreateMessage, as specified in [MS-OXCROPS], which makes servers assign internal identifiers as usual. The following are the limitations of this mode:
Clients do not have server-accepted identifiers for objects until after they are uploaded to a server.
Clients do not control internal identifiers assigned to objects and changes by a server.
Clients cannot set values of special properties, such as the PidTagLastModificationTime property ([MS-OXPROPS] section 2.765).
Clients are entirely responsible for updating the ICS state to prevent uploaded objects from being downloaded during a subsequent synchronization download operation.