The User’s Guide has this:

CWBSY1011

Cause
The iSeries server connection is configured to use your Kerberos principal name for security authentication. These credentials were not found on your workstation. For Windows workstations, you need to log on to a Windows 2000 or XP domain, in order to obtain Kerberos credentials.

Recovery
Log off your workstation. Log back onto your workstation, and provide the appropriate domain name.

Have you followed those instructions?

Tom

On the Client Access session click ‘Communication’, ‘Properties’, in the ‘User ID signon information’ field doe it have ‘User Kerberos prinicpal name, no prompting’?

If it does try changing it to ‘Use default user ID, prompt as needed’ and add the required ID in the ‘User ID’ field.