Nokia Maps 3.09 - Why is the syncing of the favourite places not working any more with my Symbian or N9 phone?

Nokia Maps sync service for the Nokia Symbian and N9 phones has been ramped down in May 2014 and it is no longer possible to sync the Maps favourite places between the Symbian or N9 phones and When trying to sync the favourites, the error "Synchronisation incomplete" is shown. As a workaround, you can save and delete your favourites locally in Nokia Maps. The favourites are stored in the phone but cannot be synced to the web service. The ramp down of the sync service affects only Nokia Symbian and N9 phones. The syncing of the favourite places still works normally with the Lumia and Nokia X phones.