document->order ); $invoice = \wcpdf_get_document( 'invoice', $order ); if ( ! $invoice || ! $invoice->exists() ) { return $data; } $number_instance = $invoice->get_number(); $date_instance = $invoice->get_date(); $billing_reference = array( 'name' => 'cac:BillingReference', 'value' => array( array( 'name' => 'cac:InvoiceDocumentReference', 'value' => array( array( 'name' => 'cbc:ID', 'value' => ! empty( $number_instance ) ? $number_instance->get_formatted() : '', ), array( 'name' => 'cbc:IssueDate', 'value' => ! empty( $date_instance ) ? $date_instance->date_i18n( 'Y-m-d' ) : '', ), ) ), ), ); $data[] = apply_filters( 'wpo_ips_edi_ubl_billing_reference', $billing_reference, $data, $options, $this ); return $data; } }