Dear friend,

you can use this below code for accessing actual data..

   #!/usr/bin/perl                                                    
+                                            

use strict;
use warnings;
use Data::Dumper;


my ($hash);

$hash = {
          'article' => [
                       {
                         'SKU' => [
                                        'CDS00013'
                                      ],
                         'InternalSKU' => '179',
                         'AvailableItems' => [
                                        '100',
                                        '200'
                                      ]
                       },
                       {
                         'SKU' => [
                                        'CDS00014'
                                      ],
                         'InternalSKU' => '180',
                         'AvailableItems' => [
                                        '102'
                                      ]
                       }
                     ]
        };
my($key_1,$value,$data);
foreach my $key (keys %$hash){
        foreach my $element (@{$hash->{$key}}){
            
            while (($key_1, $value) = each %$element){
                #print $key_1,"\n";
                if(ref($value) eq "ARRAY") {
                    foreach $data (@{$value}) {
                        print "Actual hash of array data:$data\n"   
                    }   
                }else {
                    print "hash Value:$value\n";
                }   

                
             }

        }
    }
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