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if ( my $lparnmame = $cgi->param('lparname'))
  {
...
    $errors{'lparname'}='Lparname is required';
  }
  }

if ( my $lparname = $cgi->param('lparname') ){
    if ( $lparname eq " " ){
        $errors{'lparname'}='Lparname is required';
    }
}