$self->controller->track_progress(phase => 'building data', progress => 0);
 
-  my $i;
+  my $i = 0;
   my $num_data = scalar @{ $self->controller->data };
   foreach my $entry (@{ $self->controller->data }) {
     $self->controller->track_progress(progress => $i/$num_data * 100) if $i % 100 == 0;
                                  { name => 'shiptodepartment_2', description => $::locale->text('Department 2')                  },
                                  { name => 'shiptoemail',        description => $::locale->text('E-mail')                        },
                                  { name => 'shiptofax',          description => $::locale->text('Fax')                           },
+                                 { name => 'shiptogln',          description => $::locale->text('GLN')                           },
                                  { name => 'shiptoname',         description => $::locale->text('Name')                          },
                                  { name => 'shiptophone',        description => $::locale->text('Phone')                         },
                                  { name => 'shiptostreet',       description => $::locale->text('Street')                        },
                                  { name => 'trans_id',           description => $::locale->text('Customer/Vendor (database ID)') },
                                  { name => 'customer',           description => $::locale->text('Customer (name)')               },
                                  { name => 'customernumber',     description => $::locale->text('Customer Number')               },
+                                 { name => 'customer_gln',       description => $::locale->text('Customer GLN')                  },
                                  { name => 'vendor',             description => $::locale->text('Vendor (name)')                 },
                                  { name => 'vendornumber',       description => $::locale->text('Vendor Number')                 },
+                                 { name => 'vendor_gln',         description => $::locale->text('Vendor GLN')                    },
                                 );
 }