The File Designation entry is not valid for a file defined in a subprocedure; the specification is ignored.
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Cause . . . . . : Only full-procedural files are allowed in subprocedures. For files defined within a subprocedure, the File Designation entry (Position 16) must be F for input, update and combined files, and it must be blank for output files.
Recovery . . . : Correct the File Designation entry.