begin
if :coil_history.cpl_dtl= 'ST' then
ALERT_pkg.msg('The Coil undergone Side Trimming?');
raise form_trigger_failure;
elsif :coil_history.cpl_dtl= 'NST' then
ALERT_pkg.msg('The coil undergone No Side Trimming?');
raise form_trigger_failure;

ELSE
ALERT_pkg.msg('Please enter either ST for Side Trimming or NST for No Side Trimming');


end if;
end;