$VAR1 = {
   'client_system' => {
      'Customer Care' => {
         'business_area' => {
            'XX Business Area' => {
               'component' => [
                  {
                   'component_lib' => [
                      {
                       'class_set' => {
                          'XX Active Strategy 2' => {
                             'data_type' => '1',
                             'linked_characteristic_name' => 'ACLI-DATA.X9999-ACLI-4-MTH-AVG-UTIL',
                             'version' => '2.0',
                             'is_protected' => 'false',
                             'obj_info' => {
                                'XX Active Strategy 2' => {
                                   'obj_revision' => '1',
                                   'version' => '2.0',
                                   }
                                },
                             'base_class_set' => [
                                {
                                 'interval' => {
                                    '500-899' => {
                                       'outcome' => {
                                          '500-899' => {
                                             'uniqueID' => '4',
                                             'displayPosition' => '3'
                                             }
                                          },
                                       'range' => [
                                          '500-899'
                                          ],
                                       'is_Others' => [
                                          'false'
                                          ]
                                       },
                                    'low-199' => {
                                       'outcome' => {
                                          'low-199' => {
                                             'uniqueID' => '2',
                                             'displayPosition' => '1'
                                             }
                                          },
                                       'range' => [
                                          'low-199'
                                          ],
                                       'is_Others' => [
                                          'false'
                                          ]
                                       },
                                    'Others' => {
                                       'outcome' => {
                                          'Others' => {
                                             'uniqueID' => '1',
                                             'displayPosition' => '2147483647'
                                             }
                                          },
                                       'is_Others' => [
                                          'true'
                                          ]
                                       },
                                    '200-499' => {
                                       'outcome' => {
                                          '200-499' => {
                                             'uniqueID' => '3',
                                             'displayPosition' => '2'
                                             }
                                          },
                                       'range' => [
                                          '200-499'
                                          ],
                                       'is_Others' => [
                                          'false'
                                          ]
                                       }
                                    }
                                 }
                              ]
                           }
                        },
                     'type' => 'class_set'
                   }
                ]
             }
          ],
       'analytics' => [
          {}
          ]
       }
    },
    'signature' => 'XXXXCC',
    'version' => '3.0',
    'type' => 'Standalone',
    'obj_info' => {
       'Customer Care' => {
          'obj_revision' => '-1',
          'version' => '2.0',
          }
       }
    }
 },
 'version' => '2.1',
 'buildNumber' => 'Version 1.3'
};

##</code><code>##

#!/usr/bin/perl
use strict;
use XML::Simple;
use Data::Dumper;

my $file = 'files/data.xml';
my $xs1 = XML::Simple->new();

my $doc = $xs1->XMLin($file, forcearray => 1);

foreach my $key (keys (%{$doc->{client_system}})){
print $doc->{client_system}->{$key} . "\n";
print $doc->{client_system}->{$key}->{'business_area'} ? ;
}

##</code><code>##

'client_system' => {
    'Customer Care' => {
        'business_area' => {
            'XX Business Area' => {
                'component' => [
                    {
                     'component_lib' => [
                         {
                          'class_set' => {
                              'XX Active Strategy 2' => {
                                  'base_class_set' => [
                                      {
                                       'interval' => {
                                           '500-899' => {
                                           'low-199' => {
                                           'Others' => {
                                           '200-499' => {