1 package SL::DB::Helper::ZUGFeRD;
 
   6 use parent qw(Exporter);
 
   7 our @EXPORT = qw(create_zugferd_data create_zugferd_xmp_data);
 
   9 use SL::DB::BankAccount;
 
  10 use SL::DB::GenericTranslation;
 
  13 use SL::Helper::ISO3166;
 
  14 use SL::Helper::ISO4217;
 
  15 use SL::Helper::UNECERecommendation20;
 
  19 use Encode qw(encode);
 
  20 use List::MoreUtils qw(any pairwise);
 
  21 use List::Util qw(first sum);
 
  25 my @line_names = qw(LineOne LineTwo LineThree);
 
  29   return encode('UTF-8', $value // '');
 
  34   return $::form->round_amount($value, 2);
 
  39   my $type   = $self->invoice_type;
 
  42   return $type eq 'ar_transaction' ? $::locale->text('Invoice') : $self->displayable_type;
 
  47   my $type   = $self->invoice_type;
 
  49   # 326 (Partial invoice)
 
  50   # 380 (Commercial invoice)
 
  51   # 384 (Corrected Invoice)
 
  53   # 389 (Credit note, self billed invoice)
 
  55   return $type eq 'credit_note'        ? 381
 
  56        : $type eq 'invoice_storno'     ? 457
 
  57        : $type eq 'credit_note_storno' ? 458
 
  64   # Mapping from kivitendo's units to UN/ECE Recommendation 20 & 21.
 
  65   my $code = SL::Helper::UNECERecommendation20::map_name_to_code($unit);
 
  66   return $code if $code;
 
  68   $::lxdebug->message(LXDebug::WARN(), "ZUGFeRD unit name mapping: no UN/ECE Recommendation 20/21 unit known for kivitendo unit '$unit'; using 'C62'");
 
  73 sub _parse_our_address {
 
  75   my @street = grep { $_ } ($::instance_conf->get_address_street1, $::instance_conf->get_address_street2);
 
  77   push @result, [ 'PostcodeCode', $::instance_conf->get_address_zipcode ] if $::instance_conf->get_address_zipcode;
 
  78   push @result, grep { $_->[1] } pairwise { [ $a, $b] } @line_names, @street;
 
  79   push @result, [ 'CityName', $::instance_conf->get_address_city ] if $::instance_conf->get_address_city;
 
  80   push @result, [ 'CountryID', SL::Helper::ISO3166::map_name_to_alpha_2_code($::instance_conf->get_address_country) // 'DE' ];
 
  85 sub _customer_postal_trade_address {
 
  88   #       <ram:PostalTradeAddress>
 
  89   $params{xml}->startTag("ram:PostalTradeAddress");
 
  91   my @parts = grep { $_ } map { $params{customer}->$_ } qw(department_1 department_2 street);
 
  93   $params{xml}->dataElement("ram:PostcodeCode", _u8($params{customer}->zipcode));
 
  94   $params{xml}->dataElement("ram:" . $_->[0],   _u8($_->[1])) for grep { $_->[1] } pairwise { [ $a, $b] } @line_names, @parts;
 
  95   $params{xml}->dataElement("ram:CityName",     _u8($params{customer}->city));
 
  96   $params{xml}->dataElement("ram:CountryID",    _u8(SL::Helper::ISO3166::map_name_to_alpha_2_code($params{customer}->country) // 'DE'));
 
  98   #       </ram:PostalTradeAddress>
 
 101 sub _tax_rate_and_code {
 
 102   my ($taxzone, $tax) = @_;
 
 104   my ($tax_rate, $tax_code) = @_;
 
 106   if ($taxzone->description =~ m{Au.*erhalb}) {
 
 110   } elsif ($taxzone->description =~ m{EU mit}) {
 
 115     $tax_rate = $tax->rate * 100;
 
 116     $tax_code = !$tax_rate ? 'Z' : 'S';
 
 119   return (rate => $tax_rate, code => $tax_code);
 
 123   my ($self, %params) = @_;
 
 125   my $item_ptc = $params{ptc_data}->{items}->[$params{line_number}];
 
 127   my $taxkey   = $item_ptc->{taxkey_id} ? SL::DB::TaxKey->load_cached($item_ptc->{taxkey_id}) : undef;
 
 128   my $tax      = $item_ptc->{taxkey_id} ? SL::DB::Tax->load_cached($taxkey->tax_id)           : undef;
 
 129   my %tax_info = _tax_rate_and_code($self->taxzone, $tax);
 
 131   # <ram:IncludedSupplyChainTradeLineItem>
 
 132   $params{xml}->startTag("ram:IncludedSupplyChainTradeLineItem");
 
 134   #   <ram:AssociatedDocumentLineDocument>
 
 135   $params{xml}->startTag("ram:AssociatedDocumentLineDocument");
 
 136   $params{xml}->dataElement("ram:LineID", $params{line_number} + 1);
 
 137   $params{xml}->endTag;
 
 139   $params{xml}->startTag("ram:SpecifiedTradeProduct");
 
 140   $params{xml}->dataElement("ram:SellerAssignedID", _u8($params{item}->part->partnumber));
 
 141   $params{xml}->dataElement("ram:Name",             _u8($params{item}->description));
 
 142   $params{xml}->endTag;
 
 144   $params{xml}->startTag("ram:SpecifiedLineTradeAgreement");
 
 145   $params{xml}->startTag("ram:NetPriceProductTradePrice");
 
 146   $params{xml}->dataElement("ram:ChargeAmount", _r2($item_ptc->{sellprice}));
 
 147   $params{xml}->endTag;
 
 148   $params{xml}->endTag;
 
 149   #   </ram:SpecifiedLineTradeAgreement>
 
 151   #   <ram:SpecifiedLineTradeDelivery>
 
 152   $params{xml}->startTag("ram:SpecifiedLineTradeDelivery");
 
 153   $params{xml}->dataElement("ram:BilledQuantity", $params{item}->qty, unitCode => _unit_code($params{item}->unit));
 
 154   $params{xml}->endTag;
 
 155   #   </ram:SpecifiedLineTradeDelivery>
 
 157   #   <ram:SpecifiedLineTradeSettlement>
 
 158   $params{xml}->startTag("ram:SpecifiedLineTradeSettlement");
 
 160   #     <ram:ApplicableTradeTax>
 
 161   $params{xml}->startTag("ram:ApplicableTradeTax");
 
 162   $params{xml}->dataElement("ram:TypeCode",              "VAT");
 
 163   $params{xml}->dataElement("ram:CategoryCode",          $tax_info{code});
 
 164   $params{xml}->dataElement("ram:RateApplicablePercent", _r2($tax_info{rate}));
 
 165   $params{xml}->endTag;
 
 166   #     </ram:ApplicableTradeTax>
 
 168   #     <ram:SpecifiedTradeSettlementLineMonetarySummation>
 
 169   $params{xml}->startTag("ram:SpecifiedTradeSettlementLineMonetarySummation");
 
 170   $params{xml}->dataElement("ram:LineTotalAmount", _r2($item_ptc->{linetotal}));
 
 171   $params{xml}->endTag;
 
 172   #     </ram:SpecifiedTradeSettlementLineMonetarySummation>
 
 174   $params{xml}->endTag;
 
 175   #   </ram:SpecifiedLineTradeSettlement>
 
 177   $params{xml}->endTag;
 
 178   # <ram:IncludedSupplyChainTradeLineItem>
 
 181 sub _specified_trade_settlement_payment_means {
 
 182   my ($self, %params) = @_;
 
 184   #     <ram:SpecifiedTradeSettlementPaymentMeans>
 
 185   $params{xml}->startTag('ram:SpecifiedTradeSettlementPaymentMeans');
 
 186   $params{xml}->dataElement('ram:TypeCode', $self->direct_debit ? 59 : 58); # 59 = SEPA direct debit, 58 = SEPA credit transfer
 
 188   if ($self->direct_debit) {
 
 189     $params{xml}->startTag('ram:PayerPartyDebtorFinancialAccount');
 
 190     $params{xml}->dataElement('ram:IBANID', $self->customer->iban);
 
 191     $params{xml}->endTag;
 
 194     $params{xml}->startTag('ram:PayeePartyCreditorFinancialAccount');
 
 195     $params{xml}->dataElement('ram:IBANID', $params{bank_account}->iban);
 
 196     $params{xml}->endTag;
 
 199   $params{xml}->endTag;
 
 200   #     </ram:SpecifiedTradeSettlementPaymentMeans>
 
 204   my ($self, %params) = @_;
 
 208   foreach my $item (@{ $params{ptc_data}->{items} }) {
 
 209     $taxkey_info{$item->{taxkey_id}} //= {
 
 213     my $info             = $taxkey_info{$item->{taxkey_id}};
 
 214     $info->{taxkey}    //= SL::DB::TaxKey->load_cached($item->{taxkey_id});
 
 215     $info->{tax}       //= SL::DB::Tax->load_cached($info->{taxkey}->tax_id);
 
 216     $info->{linetotal}  += $item->{linetotal};
 
 219   foreach my $taxkey_id (sort keys %taxkey_info) {
 
 220     my $info     = $taxkey_info{$taxkey_id};
 
 221     my %tax_info = _tax_rate_and_code($self->taxzone, $info->{tax});
 
 223     #     <ram:ApplicableTradeTax>
 
 224     $params{xml}->startTag("ram:ApplicableTradeTax");
 
 225     $params{xml}->dataElement("ram:CalculatedAmount",      _r2($params{ptc_data}->{taxes_by_tax_id}->{$info->{taxkey}->tax_id}));
 
 226     $params{xml}->dataElement("ram:TypeCode",              "VAT");
 
 227     $params{xml}->dataElement("ram:BasisAmount",           _r2($info->{linetotal}));
 
 228     $params{xml}->dataElement("ram:CategoryCode",          $tax_info{code});
 
 229     $params{xml}->dataElement("ram:RateApplicablePercent", _r2($tax_info{rate}));
 
 230     $params{xml}->endTag;
 
 231     #     </ram:ApplicableTradeTax>
 
 235 sub _calculate_payment_terms_values {
 
 238   my (%vars, %amounts, %formatted_amounts);
 
 240   local $::myconfig{numberformat} = $::myconfig{numberformat};
 
 241   local $::myconfig{dateformat}   = $::myconfig{dateformat};
 
 243   if ($self->language_id) {
 
 244     my $language = SL::DB::Language->load_cached($self->language_id);
 
 245     $::myconfig{dateformat}   = $language->output_dateformat   if $language->output_dateformat;
 
 246     $::myconfig{numberformat} = $language->output_numberformat if $language->output_numberformat;
 
 249   $vars{currency}              = $self->currency->name if $self->currency;
 
 250   $vars{$_}                    = $self->customer->$_      for qw(account_number bank bank_code bic iban mandate_date_of_signature mandator_id);
 
 251   $vars{$_}                    = $self->payment_terms->$_ for qw(terms_netto terms_skonto percent_skonto);
 
 252   $vars{payment_description}   = $self->payment_terms->description;
 
 253   $vars{netto_date}            = $self->payment_terms->calc_date(reference_date => $self->transdate, due_date => $self->duedate, terms => 'net')->to_kivitendo;
 
 254   $vars{skonto_date}           = $self->payment_terms->calc_date(reference_date => $self->transdate, due_date => $self->duedate, terms => 'discount')->to_kivitendo;
 
 256   $amounts{invtotal}           = $self->amount;
 
 257   $amounts{total}              = $self->amount - $self->paid;
 
 259   $amounts{skonto_in_percent}  = 100.0 * $vars{percent_skonto};
 
 260   $amounts{skonto_amount}      = $amounts{invtotal} * $vars{percent_skonto};
 
 261   $amounts{invtotal_wo_skonto} = $amounts{invtotal} * (1 - $vars{percent_skonto});
 
 262   $amounts{total_wo_skonto}    = $amounts{total}    * (1 - $vars{percent_skonto});
 
 264   foreach (keys %amounts) {
 
 265     $amounts{$_}           = $::form->round_amount($amounts{$_}, 2);
 
 266     $formatted_amounts{$_} = $::form->format_amount(\%::myconfig, $amounts{$_}, 2);
 
 271     amounts           => \%amounts,
 
 272     formatted_amounts => \%formatted_amounts,
 
 276 sub _format_payment_terms_description {
 
 277   my ($self, %params) = @_;
 
 279   my $description = ($self->payment_terms->translated_attribute('description_long_invoice', $self->language_id) // '') || $self->payment_terms->description_long_invoice;
 
 280   $description    =~ s{<\%$_\%>}{ $params{vars}->{$_} }ge              for keys %{ $params{vars} };
 
 281   $description    =~ s{<\%$_\%>}{ $params{formatted_amounts}->{$_} }ge for keys %{ $params{formatted_amounts} };
 
 287   my ($self, %params) = @_;
 
 289   return unless $self->payment_terms;
 
 291   my %payment_terms_vars = _calculate_payment_terms_values($self);
 
 293   #     <ram:SpecifiedTradePaymentTerms>
 
 294   $params{xml}->startTag("ram:SpecifiedTradePaymentTerms");
 
 296   $params{xml}->dataElement("ram:Description", _u8(_format_payment_terms_description($self, %payment_terms_vars)));
 
 298   #       <ram:DueDateDateTime>
 
 299   $params{xml}->startTag("ram:DueDateDateTime");
 
 300   $params{xml}->dataElement("udt:DateTimeString", $self->duedate->strftime('%Y%m%d'), format => "102");
 
 301   $params{xml}->endTag;
 
 302   #       </ram:DueDateDateTime>
 
 304   if ($self->payment_terms->percent_skonto && $self->payment_terms->terms_skonto) {
 
 305     my $currency_id = _u8(SL::Helper::ISO4217::map_currency_name_to_code($self->currency->name) // 'EUR');
 
 307     #       <ram:ApplicableTradePaymentDiscountTerms>
 
 308     $params{xml}->startTag("ram:ApplicableTradePaymentDiscountTerms");
 
 309     $params{xml}->dataElement("ram:BasisPeriodMeasure", $self->payment_terms->terms_skonto, unitCode => "DAY");
 
 310     $params{xml}->dataElement("ram:BasisAmount",        _r2($payment_terms_vars{amounts}->{invtotal}), currencyID => $currency_id);
 
 311     $params{xml}->dataElement("ram:CalculationPercent", _r2($self->payment_terms->percent_skonto * 100));
 
 312     $params{xml}->endTag;
 
 313     #       </ram:ApplicableTradePaymentDiscountTerms>
 
 316   $params{xml}->endTag;
 
 317   #     </ram:SpecifiedTradePaymentTerms>
 
 321   my ($self, %params) = @_;
 
 323   #     <ram:SpecifiedTradeSettlementHeaderMonetarySummation>
 
 324   $params{xml}->startTag("ram:SpecifiedTradeSettlementHeaderMonetarySummation");
 
 326   $params{xml}->dataElement("ram:LineTotalAmount",     _r2($self->netamount));
 
 327   $params{xml}->dataElement("ram:TaxBasisTotalAmount", _r2($self->netamount));
 
 328   $params{xml}->dataElement("ram:TaxTotalAmount",      _r2(sum(values %{ $params{ptc_data}->{taxes_by_tax_id} })), currencyID => "EUR");
 
 329   $params{xml}->dataElement("ram:GrandTotalAmount",    _r2($self->amount));
 
 330   $params{xml}->dataElement("ram:TotalPrepaidAmount",  _r2($self->paid));
 
 331   $params{xml}->dataElement("ram:DuePayableAmount",    _r2($self->amount - $self->paid));
 
 333   $params{xml}->endTag;
 
 334   #     </ram:SpecifiedTradeSettlementHeaderMonetarySummation>
 
 337 sub _exchanged_document_context {
 
 338   my ($self, %params) = @_;
 
 340   #   <rsm:ExchangedDocumentContext>
 
 341   $params{xml}->startTag("rsm:ExchangedDocumentContext");
 
 343   if ($self->customer->create_zugferd_invoices_for_this_customer == 2) {
 
 344     $params{xml}->startTag("ram:TestIndicator");
 
 345     $params{xml}->dataElement("udt:Indicator", "true");
 
 346     $params{xml}->endTag;
 
 349   $params{xml}->startTag("ram:GuidelineSpecifiedDocumentContextParameter");
 
 350   $params{xml}->dataElement("ram:ID", "urn:cen.eu:en16931:2017#conformant#urn:zugferd.de:2p0:extended");
 
 351   $params{xml}->endTag;
 
 352   $params{xml}->endTag;
 
 353   #   </rsm:ExchangedDocumentContext>
 
 357   my ($self, %params) = @_;
 
 359   $params{xml}->startTag("ram:IncludedNote");
 
 360   $params{xml}->dataElement("ram:Content", _u8($params{note}));
 
 361   $params{xml}->endTag;
 
 364 sub _exchanged_document {
 
 365   my ($self, %params) = @_;
 
 367   #   <rsm:ExchangedDocument>
 
 368   $params{xml}->startTag("rsm:ExchangedDocument");
 
 370   $params{xml}->dataElement("ram:ID",       _u8($self->invnumber));
 
 371   $params{xml}->dataElement("ram:Name",     _u8(_type_name($self)));
 
 372   $params{xml}->dataElement("ram:TypeCode", _u8(_type_code($self)));
 
 374   #     <ram:IssueDateTime>
 
 375   $params{xml}->startTag("ram:IssueDateTime");
 
 376   $params{xml}->dataElement("udt:DateTimeString", $self->transdate->strftime('%Y%m%d'), format => "102");
 
 377   $params{xml}->endTag;
 
 378   #     </ram:IssueDateTime>
 
 380   if ($self->language && (($self->language->template_code // '') =~ m{^(de|en)}i)) {
 
 381     $params{xml}->dataElement("ram:LanguageID", uc($1));
 
 384   my $std_notes = SL::DB::Manager::GenericTranslation->get_all(
 
 386       translation_type => 'ZUGFeRD/notes',
 
 388         language_id    => undef,
 
 389         language_id    => $self->language_id,
 
 391       '!translation'   => undef,
 
 392       '!translation'   => '',
 
 396   my $std_note = first { $_->language_id == $self->language_id } @{ $std_notes };
 
 397   $std_note  //= first { !defined $_->language_id }              @{ $std_notes };
 
 399   my $notes = $self->notes_as_stripped_html;
 
 401   _included_note($self, %params, note => $self->transaction_description) if $self->transaction_description;
 
 402   _included_note($self, %params, note => $notes)                         if $notes;
 
 403   _included_note($self, %params, note => $std_note->translation)         if $std_note;
 
 405   $params{xml}->endTag;
 
 406   #   </rsm:ExchangedDocument>
 
 409 sub _specified_tax_registration {
 
 410   my ($ustid_nr, %params) = @_;
 
 412   #         <ram:SpecifiedTaxRegistration>
 
 413   $params{xml}->startTag("ram:SpecifiedTaxRegistration");
 
 414   $params{xml}->dataElement("ram:ID", _u8(SL::VATIDNr->normalize($ustid_nr)), schemeID => "VA");
 
 415   $params{xml}->endTag;
 
 416   #         </ram:SpecifiedTaxRegistration>
 
 419 sub _seller_trade_party {
 
 420   my ($self, %params) = @_;
 
 422   my @our_address            = _parse_our_address();
 
 424   my $sales_person           = $self->salesman;
 
 425   my $sales_person_auth      = SL::DB::Manager::AuthUser->find_by(login => $sales_person->login);
 
 426   my %sales_person_cfg       = $sales_person_auth ? %{ $sales_person_auth->config_values } : ();
 
 427   $sales_person_cfg{email} ||= $sales_person->deleted_email;
 
 428   $sales_person_cfg{tel}   ||= $sales_person->deleted_tel;
 
 430   #       <ram:SellerTradeParty>
 
 431   $params{xml}->startTag("ram:SellerTradeParty");
 
 432   $params{xml}->dataElement("ram:ID",   _u8($self->customer->c_vendor_id)) if ($self->customer->c_vendor_id // '') ne '';
 
 433   $params{xml}->dataElement("ram:Name", _u8($::instance_conf->get_company));
 
 435   #         <ram:DefinedTradeContact>
 
 436   $params{xml}->startTag("ram:DefinedTradeContact");
 
 438   $params{xml}->dataElement("ram:PersonName", _u8($sales_person_cfg{name} || $sales_person_cfg{login}));
 
 440   if ($sales_person_cfg{tel}) {
 
 441     $params{xml}->startTag("ram:TelephoneUniversalCommunication");
 
 442     $params{xml}->dataElement("ram:CompleteNumber", _u8($sales_person_cfg{tel}));
 
 443     $params{xml}->endTag;
 
 446   if ($sales_person_cfg{email}) {
 
 447     $params{xml}->startTag("ram:EmailURIUniversalCommunication");
 
 448     $params{xml}->dataElement("ram:URIID", _u8($sales_person_cfg{email}));
 
 449     $params{xml}->endTag;
 
 452   $params{xml}->endTag;
 
 453   #         </ram:DefinedTradeContact>
 
 456     #         <ram:PostalTradeAddress>
 
 457     $params{xml}->startTag("ram:PostalTradeAddress");
 
 458     foreach my $element (@our_address) {
 
 459       $params{xml}->dataElement("ram:" . $element->[0], _u8($element->[1]));
 
 461     $params{xml}->endTag;
 
 462     #         </ram:PostalTradeAddress>
 
 465   _specified_tax_registration($::instance_conf->get_co_ustid, %params);
 
 467   $params{xml}->endTag;
 
 468   #     </ram:SellerTradeParty>
 
 471 sub _buyer_trade_party {
 
 472   my ($self, %params) = @_;
 
 474   #       <ram:BuyerTradeParty>
 
 475   $params{xml}->startTag("ram:BuyerTradeParty");
 
 476   $params{xml}->dataElement("ram:ID",   _u8($self->customer->customernumber));
 
 477   $params{xml}->dataElement("ram:Name", _u8($self->customer->name));
 
 479   _customer_postal_trade_address(%params, customer => $self->customer);
 
 480   _specified_tax_registration($self->customer->ustid, %params);
 
 482   $params{xml}->endTag;
 
 483   #       </ram:BuyerTradeParty>
 
 486 sub _included_supply_chain_trade_line_item {
 
 487   my ($self, %params) = @_;
 
 490   foreach my $item (@{ $self->items }) {
 
 491     _line_item($self, %params, item => $item, line_number => $line_number);
 
 496 sub _applicable_header_trade_agreement {
 
 497   my ($self, %params) = @_;
 
 499   #     <ram:ApplicableHeaderTradeAgreement>
 
 500   $params{xml}->startTag("ram:ApplicableHeaderTradeAgreement");
 
 502   _seller_trade_party($self, %params);
 
 503   _buyer_trade_party($self, %params);
 
 505   if ($self->cusordnumber) {
 
 506     #     <ram:BuyerOrderReferencedDocument>
 
 507     $params{xml}->startTag("ram:BuyerOrderReferencedDocument");
 
 508     $params{xml}->dataElement("ram:IssuerAssignedID", _u8($self->cusordnumber));
 
 509     $params{xml}->endTag;
 
 510     #     </ram:BuyerOrderReferencedDocument>
 
 513   $params{xml}->endTag;
 
 514   #     </ram:ApplicableHeaderTradeAgreement>
 
 517 sub _applicable_header_trade_delivery {
 
 518   my ($self, %params) = @_;
 
 520   #     <ram:ApplicableHeaderTradeDelivery>
 
 521   $params{xml}->startTag("ram:ApplicableHeaderTradeDelivery");
 
 522   #       <ram:ActualDeliverySupplyChainEvent>
 
 523   $params{xml}->startTag("ram:ActualDeliverySupplyChainEvent");
 
 525   $params{xml}->startTag("ram:OccurrenceDateTime");
 
 526   $params{xml}->dataElement("udt:DateTimeString", ($self->deliverydate // $self->transdate)->strftime('%Y%m%d'), format => "102");
 
 527   $params{xml}->endTag;
 
 529   $params{xml}->endTag;
 
 530   #       </ram:ActualDeliverySupplyChainEvent>
 
 531   $params{xml}->endTag;
 
 532   #     </ram:ApplicableHeaderTradeDelivery>
 
 535 sub _applicable_header_trade_settlement {
 
 536   my ($self, %params) = @_;
 
 538   #     <ram:ApplicableHeaderTradeSettlement>
 
 539   $params{xml}->startTag("ram:ApplicableHeaderTradeSettlement");
 
 540   $params{xml}->dataElement("ram:InvoiceCurrencyCode", _u8(SL::Helper::ISO4217::map_currency_name_to_code($self->currency->name) // 'EUR'));
 
 542   _specified_trade_settlement_payment_means($self, %params);
 
 543   _taxes($self, %params);
 
 544   _payment_terms($self, %params);
 
 545   _totals($self, %params);
 
 547   $params{xml}->endTag;
 
 548   #     </ram:ApplicableHeaderTradeSettlement>
 
 551 sub _supply_chain_trade_transaction {
 
 552   my ($self, %params) = @_;
 
 554   #   <rsm:SupplyChainTradeTransaction>
 
 555   $params{xml}->startTag("rsm:SupplyChainTradeTransaction");
 
 557   _included_supply_chain_trade_line_item($self, %params);
 
 558   _applicable_header_trade_agreement($self, %params);
 
 559   _applicable_header_trade_delivery($self, %params);
 
 560   _applicable_header_trade_settlement($self, %params);
 
 562   $params{xml}->endTag;
 
 563   #   </rsm:SupplyChainTradeTransaction>
 
 570   my $prefix = $::locale->text('The ZUGFeRD invoice data cannot be generated because the data validation failed.') . ' ';
 
 572   if (!$::instance_conf->get_co_ustid) {
 
 573     SL::X::ZUGFeRDValidation->throw(message => $prefix . $::locale->text('The VAT registration number is missing in the client configuration.'));
 
 576   if (!SL::VATIDNr->validate($::instance_conf->get_co_ustid)) {
 
 577     SL::X::ZUGFeRDValidation->throw(message => $prefix . $::locale->text("The VAT ID number in the client configuration is invalid."));
 
 580   if (!$::instance_conf->get_company || any { my $get = "get_address_$_"; !$::instance_conf->$get } qw(street1 zipcode city)) {
 
 581     SL::X::ZUGFeRDValidation->throw(message => $prefix . $::locale->text('The company\'s address information is incomplete in the client configuration.'));
 
 584   if ($::instance_conf->get_address_country && !SL::Helper::ISO3166::map_name_to_alpha_2_code($::instance_conf->get_address_country)) {
 
 585     SL::X::ZUGFeRDValidation->throw(message => $prefix . $::locale->text('The country from the company\'s address in the client configuration cannot be mapped to an ISO 3166-1 alpha 2 code.'));
 
 588   if ($self->customer->country && !SL::Helper::ISO3166::map_name_to_alpha_2_code($self->customer->country)) {
 
 589     SL::X::ZUGFeRDValidation->throw(message => $prefix . $::locale->text('The country from the customer\'s address cannot be mapped to an ISO 3166-1 alpha 2 code.'));
 
 592   if (!SL::Helper::ISO4217::map_currency_name_to_code($self->currency->name)) {
 
 593     SL::X::ZUGFeRDValidation->throw(message => $prefix . $::locale->text('The currency "#1" cannot be mapped to an ISO 4217 currency code.', $self->currency->name));
 
 596   my $failed_unit = first { !SL::Helper::UNECERecommendation20::map_name_to_code($_) } map { $_->unit } @{ $self->items };
 
 598     SL::X::ZUGFeRDValidation->throw(message => $prefix . $::locale->text('One of the units used (#1) cannot be mapped to a known unit code from the UN/ECE Recommendation 20 list.', $failed_unit));
 
 601   if ($self->direct_debit) {
 
 602     if (!$self->customer->iban) {
 
 603       SL::X::ZUGFeRDValidation->throw(message => $prefix . $::locale->text('The customer\'s bank account number (IBAN) is missing.'));
 
 607     my $bank_accounts     = SL::DB::Manager::BankAccount->get_all;
 
 608     $result{bank_account} = scalar(@{ $bank_accounts }) == 1 ? $bank_accounts->[0] : first { $_->use_for_zugferd } @{ $bank_accounts };
 
 610     if (!$result{bank_account}) {
 
 611       SL::X::ZUGFeRDValidation->throw(message => $prefix . $::locale->text('No bank account flagged for ZUGFeRD usage was found.'));
 
 618 sub create_zugferd_data {
 
 623   my %params        = _validate_data($self);
 
 624   $params{ptc_data} = { $self->calculate_prices_and_taxes };
 
 625   $params{xml}      = XML::Writer->new(
 
 632   $params{xml}->xmlDecl();
 
 634   # <rsm:CrossIndustryInvoice>
 
 635   $params{xml}->startTag("rsm:CrossIndustryInvoice",
 
 636                          "xmlns:a"   => "urn:un:unece:uncefact:data:standard:QualifiedDataType:100",
 
 637                          "xmlns:rsm" => "urn:un:unece:uncefact:data:standard:CrossIndustryInvoice:100",
 
 638                          "xmlns:qdt" => "urn:un:unece:uncefact:data:standard:QualifiedDataType:10",
 
 639                          "xmlns:ram" => "urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100",
 
 640                          "xmlns:xs"  => "http://www.w3.org/2001/XMLSchema",
 
 641                          "xmlns:udt" => "urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100");
 
 643   _exchanged_document_context($self, %params);
 
 644   _exchanged_document($self, %params);
 
 645   _supply_chain_trade_transaction($self, %params);
 
 647   $params{xml}->endTag;
 
 648   # </rsm:CrossIndustryInvoice>
 
 653 sub create_zugferd_xmp_data {
 
 657     conformance_level  => 'EXTENDED',
 
 658     document_file_name => 'ZUGFeRD-invoice.xml',
 
 659     document_type      => 'INVOICE',