COBOL · File status code
What does File Status 37 mean in COBOL?
An OPEN was attempted in a mode (INPUT, OUTPUT, I-O, EXTEND) that the file's underlying organization or device does not support.
An OPEN was attempted in a mode (INPUT, OUTPUT, I-O, EXTEND) that the file's underlying organization or device does not support.
Check the file's actual organization against the mode requested, and confirm the device or dataset type actually supports that mode.