The MKD command was issued to create a new PDS, but the current setting of the SITE UNIT parameter was not valid for a PDS (for example, the SITE UNIT was set to TAPE and a PDS cannot be allocated on a tape ).
The MKD command is rejected. Control is returned to the client connection for further command processing.
Issue the SITE command with the UNIT parameter to change the setting of the UNIT parameter to a unit that is valid for a PDS, then reissue the MKD command.
None.