6027-3578 [E] pathName is not a valid argument for this command. You must specify a path name within a single GPFS snapshot.
Explanation
This message is similar to message number 6027-872,
but the pathName does not specify a path that can
be scanned. The value specified for pathName might
be a .snapdir or similar object.
User response
Correct the command invocation and reissue the command.