In this post, you’ll learn about the COBOL runtime Error Code 104 and the reason why you are receiving it
COBOL Error Code :
104
Reason for this Error in COBOL
Null file name used in a file operation (Fatal) -You specified a data-name for a filename instead of a literal, and the data item contained only spaces when you tried to open the file. -Recode your program specifying the correct filename.