how to make mandatory field in table control without giving in screen attr
I have a requirement to make one of the field as mandatory in table control without making that field as mandatory in the screen attributes. If i have no entries in table control how can i through an error message to restrict the user to enter that field.I have tried to populate one empty record to the table control before looping the table control in PAI,but only if the record was entered in the table control it is able to loop otherwise it's not getting looped. I tried to populate after the loop chain endchain endloop. If i want to through an error message the entire screen is getting grayed out.