The File Type is not I, O, U, or C; defaults to O if File Designation is blank, otherwise to I.
20
Cause . . . . . : The File-Type entry (position 17) of a File Description specification is not I (input), O (output), U (update) or C (combined). The File-Type entry defaults to O if the File-Designation entry (position 18) is blank; otherwise, the File-Type entry defaults to I.
Recovery . . . : Specify an I, O, U, or C (position 17) for the File-Type entry. Compile again.
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