hi.
i want to throw thw error message if the user enters the value not valid(not in the range) for the zregion1 of zbwcntry of the select options.
and user should be able to correct it before moving ahead.
Also,iis not a mandatory field,So if it is initial,it can b blank.
but if the input doesnot lie in the range,it should give error message on the selction screen.
please guid with the line of codes.