Configuring Users doubt

[amol0009in_7]

Can someone explain me the below line , i am unable to get it eventhough i read many times:-

Note - If this user’s certificate is to be generated by a non-Check Point Certificate
Authority, the Login Name is the Common Name (CN) component of the user’s Domain
Name (DN).
For example, if the user’s DN is: [CN = James, O = My Organization, C = My Country],
the user’s Login Name is James.
CNs used as Login Names must consist of a single string (with no spaces).

[chillyjim]

If you are using a CA that is NOT the SmartCenter, then the username for a VPN user is the "CN" field. That field cannot have <space> in it (e.g. "CN=Jim Holmes,...")

[amol0009in_7]

Thanks!!!!!!!!!
i got it now