Oracle Message ORA-08447 - syntax error in USAGE clause in mask options

ERRORsyntax error in USAGE clause in mask options
CAUSEA syntax error was found in the USAGE clause in the mask options parameter passed to a UTL_PG conversion routine. Valid specifications are: USAGE DISPLAY USAGE COMP USAGE COMP-3 USAGE COMP-4 USAGE COMPUTATIONAL USAGE COMPUTATIONAL-3 USAGE COMPUTATIONAL-4 USAGE IS DISPLAY USAGE IS COMP USAGE IS COMP-3 USAGE IS COMP-4 USAGE IS COMPUTATIONAL USAGE IS COMPUTATIONAL-3 USAGE IS COMPUTATIONAL-4
ACTIONCorrect the mask options parameter.