SmartSync and Security

Hello,

I have a question concerning SmartSync and Security issues. During Synchronization the SyncBo calls the corresponding BAPI wrapper in the specified RFC destination right ?

Which user is used for this ?

If I specify the RFC destination with a specific user - is this user always used for the RFC function call or is the current user of the Web AS (taken from the Mobile Client user) used ?

What happens if I use a timed synchronization type ? Which user is used then ?

Regards,

Matthias