LDAP synchronization problem with SNC field

Hi,

I have configured LDAP and SNC for ABAP stack using Kerberos. During the mapping of SNC filed with Active directory attribute I am facing a problem. The SNC cannonical name should be like p:Username<at>DOMAIN.COM but I can only map this to either p: (as constant) or Username<at>DOMAIN.COM but I can not map these two to the SNC filed same time. Is there any functional module available so that I can map the filed to constant value and the AD attribute same time? or I must modify all users info manually in SNC field?

Please provide some solution to my problem.

Thanks,

Ajay.