I have this block of code: 
# Build Host to Storage relationship and enter into database
my %remove_dups;
foreach my $host(keys %{$build_dwh{'h2s'}}) {
   my ($storID,$lcstorage,$lcalias);
   foreach my $keys(keys %{$build_dwh{'h2s'}{$host}}) {
      foreach my $arrayID (@{$build_dwh{'h2s'}{$host}{$keys}}) {
         my $lchost = lc($host);
         my $lcstor = lc($arrayID);
         my $cmpOne = $rtrn_prdb_id{'storage'}{$lcstor};
         my $cmpTwo = $rtrn_prdb_id{'serial'}{$lcstor};
         my $storID = ($cmpOne ? $cmpOne : $cmpTwo);

         if($storID) {
            my $htcref = join(".",$rtrn_prdb_id{'host'}{$lchost},$stor
+ID);
            if(!$rtrn_prdb_id{'hTSId'}{$htcref}) {
               push @{$remove_dups{$storID}}, $rtrn_prdb_id{'host'}{$l
+chost};
#               push @h2s, [$rtrn_prdb_id{'host'}{$lchost},$storID];
            }
         }
      }
   }
}
#processH2sLoad(@h2s);
my  %rebuild_h2s;
foreach my $storArr(%remove_dups) {
   my %seen =() ;
   my @unique_array = grep { ! $seen{$_}++ } @{$remove_dups{$storArr}}
+;
   $rebuild_h2s{$storArr} = \@unique_array;
}

foreach my $storArr(%rebuild_h2s) {
   my @shift_load = @{$rebuild_h2s{$storArr}}; #<--- Error Here
   for(my $i = 0; $i <=$#shift_load; $i++) {
      push @h2s, [$shift_load[$i],$storArr];
   }
}

[download]
it causes this error 
Can't use an undefined value as an ARRAY reference at TEMP_load_OCI_Ho
+stData_Complete.pl line 393.

[download]
when I dump the hash I get the following: 
$VAR1 = 'ARRAY(0xdf95524)'; #<--- Can't get rid of this shouldn't be h
+ere
$VAR2 = [];
$VAR3 = '102';
$VAR4 = [
          '10045475',
          '10045476',
          '10045477',
          '10045478',
          '10045479',
          '10045480',
          '10045482',
          '10045481',
          '10045483',
          '10045484',
          '10045485',
          '10045486',
          '10045487',
          '10045488',
          '10045489',
          '10045490',
          '10045492',
          '10045491',
          '10045494',
          '10045493',
          '10045496',
          '10045495'
]

[download]
but not sure how to get rid of it;

In reply to Problem with undifined value as an ARRAY reference by mrras25

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