#!/usr/bin/perl -w
use strict;
use Data::Dumper;

    #   The objective of the application is to demonstrate
    #   how to use 

    # Build an array of hashes.
    my @data2 = (
            {            "DR"=>[0,0,0,0,0],
                "SAT ITAMS"=>[0,0,0,0,0],
                "PROD ITAMS"=>[0,0,0,0,0]
            }
    ); # End of the array.
    
    my @data=({}); 
    
    my $work_request = {
       "DR"=>[0,0,0,0,0],
       "SAT ITAMS"=>[0,0,0,0,0],
       "PROD ITAMS"=>[0,0,0,0,0]
    };
    
    
   
    
    for ( my $indx = 0; $indx <=2; $indx++){
        
        # Make a reference to the hash reference 
         my $work_package = \%{$work_request};
        
        
        
        # The hash should be constructed dynamically?
        foreach my $key (keys %{$work_package}){
            my @list = @{$work_package->{$key}};
            for (my $a_id=0; $a_id <= $#list; $a_id++) {
                $list[$a_id]=$indx;
                print " $list[$a_id]\t";
            }
            print "\n";
        }
        print"\n";
        
        # Add the hash reference to the array
        #push (@data, %{$work_package})
        push (@data, \%{$work_package});
        
    }

    # Printing out the array of hashes list. 

    # Now is print out the array of hashes. 
      for ( my $indx = 0; $indx <=2; $indx++){
        
        # Make a reference to the hash reference 
        my $work_package = pop(@data);
        
        # The hash should be constructed dynamically?
        foreach my $key (keys %{$work_package}){
            #print "$key\t";
            my @list = @{$work_package->{$key}};
            for (my $a_id=0; $a_id <= $#list; $a_id++) {
                print " $list[$a_id]\t";
            }
            print "\n";
        }
        print"\n";
    }

The output I get is the following:
 0	 0	 0	 0	 0	
 0	 0	 0	 0	 0	
 0	 0	 0	 0	 0	

 1	 1	 1	 1	 1	
 1	 1	 1	 1	 1	
 1	 1	 1	 1	 1	

 2	 2	 2	 2	 2	
 2	 2	 2	 2	 2	
 2	 2	 2	 2	 2	

 0	 0	 0	 0	 0	
 0	 0	 0	 0	 0	
 0	 0	 0	 0	 0	

 0	 0	 0	 0	 0	
 0	 0	 0	 0	 0	
 0	 0	 0	 0	 0	

 0	 0	 0	 0	 0	
 0	 0	 0	 0	 0	
 0	 0	 0	 0	 0