In the docs for version 7.0.3, "Using Zenworks with Novell Service Desk", "Importing the Zenworks user source to Novell Service Desk" it is said:

Mix Mode: Ensure No is enabled. Internal Authentication is not supported by ZENworks.

I wonder if someone could elaborate on that. I understand that I cannot perform Zenworks remote control or bundle management on customers who do not exist in the Zenworks LDAP user source, but is there a reason why I can't have such customers in Service Desk at all?