/NOOPTIMIZE is recommended with /DEBUG

   Explanation:  The compiler performs optimization of your COBOL
   program when you specify /DEBUG, resulting in unusual program
   behavior when stepping through your program in subsequent
   debugging sessions.  In addition, program SECTION and
   PARAGRAPH names may not appear when debugging optimized
   programs.

   User Action:  To suppress this compiler message, you must change
   the level of optimization on the COBOL command line or specify no
   optimization.  (For example, specify /NOOPTIMIZE, /OPTIMIZE, or
   /OPTIMIZE=LEVEL=x).  To provide the debugger with the best possible
   information about your program, specify /NOOPTIMIZE.