Library /sys$common/syshlp/scacp$help.hlb SET, TRACE, Qualifiers, /EXCLUDE  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /EXCLUDE[=(nodename1[/LOCAL_DEVICE=landevicename]
       [/REMOTEDEVICE=landevicename],nodename2,...)]

    Excludes VCs or channels, or both, to specific nodes, which you
    can specify using wildcards. Each node name can be accompanied
    by optional qualifiers to specify local and remote device names.
    If no local or remote device name is specified, the VC and all
    channels associated with the specified node are excluded.