my @problems = @{ $self->{problems} };
+ map { $self->{$_} ||= [] } qw(ap_ar_taxkey_problems invoice_inventory_taxkey_problems missing_taxkeys_in_invoices);
+
if (0 != scalar @{ $self->{ap_ar_taxkey_problems} }) {
my $problem = {
'type' => 'ap_ar_wrong_taxkeys',