Blank File-Designation entry is not valid with File-Type entry; defaults to F.
20
Cause . . . . . : The File-Designation entry (position 18) is blank but the File-Type entry (position 17) is not O. File Designation defaults to F.
Recovery . . . : Change the File-Designation option in position 18, and/or the File-Type entry in position 17. Compile again.
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