C2031   CASE or OTHERWISE is not immediately within DO CASE

     Explanation:  You specified a  CASE or OTHERWISE statement that does
     not fall within a DO CASE...ENDCASE control structure.  CASE and
     OTHERWISE are part of the DO CASE control structure syntax and, as such,
     cannot occur outside of the structure.

     Action:  Check to see if the CASE structure begins with a DO CASE
     statement, adding one if it is missing.  Remove the offending CASE or
     OTHERWISE statements and recompile.