ASMDCMS011E File name omitted and FILEDEF '`ddname`' is not for DISK.

Explanation
You have not included a file name in the ASMD command, and the
FILEDEF for the ddname specified is not for DISK.

System action
RC=24. Processing of the command terminates.
The system remains in the same status as before the command was entered.

Programmer response
Reissue the ASMD command and specify a file name, or reissue
the FILEDEF for the ddname specified with a device type of 'DISK'.