A CWD command was issued to change the current working directory to dsname. dsname was an existing MVS™ data set that was catalogued on an unmounted volume. The FTP server needed to mount the volume for the data set in order to determine whether or not the data set was a partitioned data set. The mount of the volume for dsname failed. The server was unable to complete the CWD command.
The server attempts to mount the data set, but the mount is unsuccessful. The current working directory is not changed.
Contact the system programmer.
Determine why the mount of the volume failed and correct the problem.