if ( get_sales_parent_numbers(ST_SALESINVOICE, $_GET['ModifyInvoice']) == 0) { // 1.xx compatibility hack
echo"<center><br><b>" . _("There are no delivery notes for this invoice.<br>
Most likely this invoice was created in Front Accounting version prior to 2.0
if ( get_sales_parent_numbers(ST_SALESINVOICE, $_GET['ModifyInvoice']) == 0) { // 1.xx compatibility hack
echo"<center><br><b>" . _("There are no delivery notes for this invoice.<br>
Most likely this invoice was created in Front Accounting version prior to 2.0