Unable to Register user in Domino Directory by using Lotus ADSync

Hi…

I’m trying to register user by using Lotus ADSync. It cannot be done and the following error appears;

" Registration finished. 0 user(s) or group(s) added to Domino Directory. 0 registrations with errors. 1 attemps(s) with errors, 1 left in queue.

Registering user in Domino directory: Access to data denied. "

Does anybody knows why.

Thanks…