Configuring RTC for Power with LDAP

Hello,
We have configured our RTC for Power System Server to use our LDAP (MS Active Directory) as the User Registry. No user can now access the server and we get no meaningful error message beside "Invalid user ID or password." When we attempt to sign in using the default ADMIN user ID, we get "You are not authorized to access Jazz Team Server Admin UI", probably because Tomcat is no longer the User Registry. All the Jazz Groups were created and populated in our LDAP: JazzAdmins, JazzDWAdmins, JazzUsers, JazzGuests, etc.

Any suggestion?

Thanks,
M. B. Diallo