diff --git a/doc/api/resources/orders.rst b/doc/api/resources/orders.rst
index 0fc3d2ab80..527d437a0c 100644
--- a/doc/api/resources/orders.rst
+++ b/doc/api/resources/orders.rst
@@ -325,7 +325,8 @@ state                                 string                     Payment state,
 source                                string                     How this refund has been created, one of ``buyer``, ``admin``, or ``external``
 amount                                money (string)             Payment amount
 created                               datetime                   Date and time of creation of this payment
-payment_date                          datetime                   Date and time of completion of this payment (or ``null``)
+comment                               string                     Reason for refund (shown to the customer in some cases, can be ``null``).
+execution_date                        datetime                   Date and time of completion of this refund (or ``null``)
 provider                              string                     Identification string of the payment provider
 ===================================== ========================== =======================================================
 
@@ -2119,6 +2120,7 @@ Order refund endpoints
             "payment": 1,
             "created": "2017-12-01T10:00:00Z",
             "execution_date": "2017-12-04T12:13:12Z",
+            "comment": "Cancellation",
             "provider": "banktransfer"
           }
         ]
@@ -2161,6 +2163,7 @@ Order refund endpoints
         "payment": 1,
         "created": "2017-12-01T10:00:00Z",
         "execution_date": "2017-12-04T12:13:12Z",
+        "comment": "Cancellation",
         "provider": "banktransfer"
       }
 
@@ -2195,6 +2198,7 @@ Order refund endpoints
         "amount": "23.00",
         "payment": 1,
         "execution_date": null,
+        "comment": "Cancellation",
         "provider": "manual",
         "mark_canceled": false,
         "mark_pending": true
@@ -2216,6 +2220,7 @@ Order refund endpoints
         "payment": 1,
         "created": "2017-12-01T10:00:00Z",
         "execution_date": null,
+        "comment": "Cancellation",
         "provider": "manual"
       }
 
diff --git a/src/pretix/api/serializers/order.py b/src/pretix/api/serializers/order.py
index babadf1bb3..2df995aaad 100644
--- a/src/pretix/api/serializers/order.py
+++ b/src/pretix/api/serializers/order.py
@@ -502,7 +502,7 @@ class OrderRefundSerializer(I18nAwareModelSerializer):
 
     class Meta:
         model = OrderRefund
-        fields = ('local_id', 'state', 'source', 'amount', 'payment', 'created', 'execution_date', 'provider')
+        fields = ('local_id', 'state', 'source', 'amount', 'payment', 'created', 'execution_date', 'comment', 'provider')
 
 
 class OrderURLField(serializers.URLField):
@@ -1324,7 +1324,7 @@ class OrderRefundCreateSerializer(I18nAwareModelSerializer):
 
     class Meta:
         model = OrderRefund
-        fields = ('state', 'source', 'amount', 'payment', 'execution_date', 'provider', 'info')
+        fields = ('state', 'source', 'amount', 'payment', 'execution_date', 'provider', 'info', 'comment')
 
     def create(self, validated_data):
         pid = validated_data.pop('payment', None)
diff --git a/src/pretix/base/exporters/orderlist.py b/src/pretix/base/exporters/orderlist.py
index 5b5135a04b..7cb66ce66c 100644
--- a/src/pretix/base/exporters/orderlist.py
+++ b/src/pretix/base/exporters/orderlist.py
@@ -652,7 +652,7 @@ class PaymentListExporter(ListExporter):
 
         headers = [
             _('Event slug'), _('Order'), _('Payment ID'), _('Creation date'), _('Completion date'), _('Status'),
-            _('Status code'), _('Amount'), _('Payment method')
+            _('Status code'), _('Amount'), _('Payment method'), _('Comment')
         ]
         yield headers
 
@@ -674,7 +674,8 @@ class PaymentListExporter(ListExporter):
                 obj.get_state_display(),
                 obj.state,
                 obj.amount * (-1 if isinstance(obj, OrderRefund) else 1),
-                provider_names.get(obj.provider, obj.provider)
+                provider_names.get(obj.provider, obj.provider),
+                obj.comment if isinstance(obj, OrderRefund) else "",
             ]
             yield row
 
diff --git a/src/pretix/base/migrations/0175_orderrefund_comment.py b/src/pretix/base/migrations/0175_orderrefund_comment.py
new file mode 100644
index 0000000000..2adab5e82e
--- /dev/null
+++ b/src/pretix/base/migrations/0175_orderrefund_comment.py
@@ -0,0 +1,18 @@
+# Generated by Django 3.0.11 on 2021-01-15 09:21
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('pretixbase', '0174_merge_20201222_1031'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='orderrefund',
+            name='comment',
+            field=models.TextField(null=True),
+        ),
+    ]
diff --git a/src/pretix/base/models/orders.py b/src/pretix/base/models/orders.py
index 799bb43f72..9a3cc611ed 100644
--- a/src/pretix/base/models/orders.py
+++ b/src/pretix/base/models/orders.py
@@ -1716,6 +1716,11 @@ class OrderRefund(models.Model):
         max_length=255,
         verbose_name=_("Payment provider")
     )
+    comment = models.TextField(
+        verbose_name=_("Refund reason"),
+        help_text=_('May be shown to the end user or used e.g. as part of a payment reference.'),
+        null=True, blank=True
+    )
     info = models.TextField(
         verbose_name=_("Payment information"),
         null=True, blank=True
diff --git a/src/pretix/base/services/cancelevent.py b/src/pretix/base/services/cancelevent.py
index 300c0a5af1..1e073a85d3 100644
--- a/src/pretix/base/services/cancelevent.py
+++ b/src/pretix/base/services/cancelevent.py
@@ -3,6 +3,7 @@ from decimal import Decimal
 
 from django.db import transaction
 from django.db.models import Count, Exists, IntegerField, OuterRef, Subquery
+from django.utils.translation import gettext
 from i18nfield.strings import LazyI18nString
 
 from pretix.base.decimal import round_decimal
@@ -195,7 +196,8 @@ def cancel_event(self, event: Event, subevent: int, auto_refund: bool,
                 if auto_refund:
                     _try_auto_refund(o.pk, manual_refund=manual_refund, allow_partial=True,
                                      source=OrderRefund.REFUND_SOURCE_ADMIN, refund_as_giftcard=refund_as_giftcard,
-                                     giftcard_expires=giftcard_expires, giftcard_conditions=giftcard_conditions)
+                                     giftcard_expires=giftcard_expires, giftcard_conditions=giftcard_conditions,
+                                     comment=gettext('Event canceled'))
             finally:
                 if send:
                     _send_mail(o, send_subject, send_message, subevent, refund_amount, user, o.positions.all())
@@ -252,7 +254,8 @@ def cancel_event(self, event: Event, subevent: int, auto_refund: bool,
             if auto_refund:
                 _try_auto_refund(o.pk, manual_refund=manual_refund, allow_partial=True,
                                  source=OrderRefund.REFUND_SOURCE_ADMIN, refund_as_giftcard=refund_as_giftcard,
-                                 giftcard_expires=giftcard_expires, giftcard_conditions=giftcard_conditions)
+                                 giftcard_expires=giftcard_expires, giftcard_conditions=giftcard_conditions,
+                                 comment=gettext('Event canceled'))
 
             if send:
                 _send_mail(o, send_subject, send_message, subevent, refund_amount, user, positions)
diff --git a/src/pretix/base/services/orders.py b/src/pretix/base/services/orders.py
index c0b8602a6a..922818d29b 100644
--- a/src/pretix/base/services/orders.py
+++ b/src/pretix/base/services/orders.py
@@ -2034,7 +2034,7 @@ _unset = object()
 
 
 def _try_auto_refund(order, manual_refund=False, allow_partial=False, source=OrderRefund.REFUND_SOURCE_BUYER,
-                     refund_as_giftcard=False, giftcard_expires=_unset, giftcard_conditions=None):
+                     refund_as_giftcard=False, giftcard_expires=_unset, giftcard_conditions=None, comment=None):
     notify_admin = False
     error = False
     if isinstance(order, int):
@@ -2059,6 +2059,7 @@ def _try_auto_refund(order, manual_refund=False, allow_partial=False, source=Ord
                 order=order,
                 payment=None,
                 source=source,
+                comment=comment,
                 state=OrderRefund.REFUND_STATE_CREATED,
                 execution_date=now(),
                 amount=can_auto_refund_sum,
@@ -2096,6 +2097,7 @@ def _try_auto_refund(order, manual_refund=False, allow_partial=False, source=Ord
                     source=source,
                     state=OrderRefund.REFUND_STATE_CREATED,
                     amount=value,
+                    comment=comment,
                     provider=p.provider
                 )
                 order.log_action('pretix.event.order.refund.created', {
@@ -2125,6 +2127,7 @@ def _try_auto_refund(order, manual_refund=False, allow_partial=False, source=Ord
             with transaction.atomic():
                 r = order.refunds.create(
                     source=source,
+                    comment=comment,
                     state=OrderRefund.REFUND_STATE_CREATED,
                     amount=refund_amount - can_auto_refund_sum,
                     provider='manual'
@@ -2149,13 +2152,14 @@ def _try_auto_refund(order, manual_refund=False, allow_partial=False, source=Ord
 @app.task(base=ProfiledTask, bind=True, max_retries=5, default_retry_delay=1, throws=(OrderError,))
 @scopes_disabled()
 def cancel_order(self, order: int, user: int=None, send_mail: bool=True, api_token=None, oauth_application=None,
-                 device=None, cancellation_fee=None, try_auto_refund=False, refund_as_giftcard=False):
+                 device=None, cancellation_fee=None, try_auto_refund=False, refund_as_giftcard=False, comment=None):
     try:
         try:
             ret = _cancel_order(order, user, send_mail, api_token, device, oauth_application,
                                 cancellation_fee)
             if try_auto_refund:
-                _try_auto_refund(order, refund_as_giftcard=refund_as_giftcard)
+                _try_auto_refund(order, refund_as_giftcard=refund_as_giftcard,
+                                 comment=comment)
             return ret
         except LockTimeoutException:
             self.retry()
diff --git a/src/pretix/control/templates/pretixcontrol/order/index.html b/src/pretix/control/templates/pretixcontrol/order/index.html
index a123555cd3..5aef10a8d1 100644
--- a/src/pretix/control/templates/pretixcontrol/order/index.html
+++ b/src/pretix/control/templates/pretixcontrol/order/index.html
@@ -6,6 +6,7 @@
 {% load rich_text %}
 {% load safelink %}
 {% load eventsignal %}
+{% load l10n %}
 {% load phone_format %}
 {% block title %}
     {% blocktrans trimmed with code=order.code %}
@@ -97,7 +98,10 @@
             {% csrf_token %}
             <input type="hidden" name="start-action" value="do_nothing">
             <input type="hidden" name="start-mode" value="partial">
-            <input type="hidden" name="start-partial_amount" value="{{ overpaid }}">
+            {% localize off %}
+            <input type="hidden" name="start-partial_amount" value="{{ overpaid|floatformat:2 }}">
+            {% endlocalize %}
+            <input type="hidden" name="comment" value="{% trans "Refund for overpayment" %}">
             <div class="alert alert-warning">
                 {% blocktrans trimmed with amount=overpaid|money:request.event.currency %}
                     This order is currently overpaid by {{ amount }}.
@@ -759,11 +763,19 @@
                                                     {% endif %}
                                                 </td>
                                             </tr>
-                                            {% if r.html_info %}
+                                            {% if r.html_info or staff_session or r.comment %}
                                                 <tr>
                                                     <td colspan="1"></td>
                                                     <td colspan="7">
-                                                        {{ r.html_info|safe }}
+                                                        {% if r.comment %}
+                                                            <dl class="dl-horizontal">
+                                                                <dt>{% trans "Comment" %}</dt>
+                                                                <dd>{{ r.comment }}</dd>
+                                                            </dl>
+                                                        {% endif %}
+                                                        {% if r.html_info %}
+                                                            {{ r.html_info|safe }}
+                                                        {% endif %}
                                                         {% if staff_session %}
                                                             <p>
                                                                 <a href="" class="btn btn-default btn-xs" data-expandrefund
@@ -775,17 +787,6 @@
                                                         {% endif %}
                                                     </td>
                                                 </tr>
-                                            {% elif staff_session %}
-                                                <tr>
-                                                    <td colspan="1"></td>
-                                                    <td colspan="7">
-                                                        <a href="" class="btn btn-default btn-xs" data-expandrefund
-                                                           data-id="{{ r.pk }}">
-                                                            <span class="fa-eye fa fa-fw"></span>
-                                                            {% trans "Inspect" %}
-                                                        </a>
-                                                    </td>
-                                                </tr>
                                             {% endif %}
                                         {% endfor %}
                                         </tbody>
diff --git a/src/pretix/control/templates/pretixcontrol/order/refund_choose.html b/src/pretix/control/templates/pretixcontrol/order/refund_choose.html
index 02c114c8ef..e8e342e4e5 100644
--- a/src/pretix/control/templates/pretixcontrol/order/refund_choose.html
+++ b/src/pretix/control/templates/pretixcontrol/order/refund_choose.html
@@ -162,6 +162,13 @@
         <input type="hidden" name="start-mode" value="{{ start_form.cleaned_data.mode }}">
         <input type="hidden" name="start-partial_amount" value="{{ partial_amount }}">
 
+        <div class="form-group">
+            <label class="control-label" for="id_comment">{% trans "Refund reason" %}</label>
+            <input type="text" name="comment" class="form-control" title="{% trans "May be shown to the end user or used e.g. as part of a payment reference." %}" id="id_comment"
+                value="{{ comment|default:"" }}">
+            <div class="help-block">{% trans "May be shown to the end user or used e.g. as part of a payment reference." %}</div>
+        </div>
+
         <div class="row checkout-button-row">
             <div class="col-md-4">
                 <a class="btn btn-block btn-default btn-lg"
diff --git a/src/pretix/control/views/orders.py b/src/pretix/control/views/orders.py
index 4769d5ad0d..cc7e73b70a 100644
--- a/src/pretix/control/views/orders.py
+++ b/src/pretix/control/views/orders.py
@@ -5,7 +5,7 @@ import os
 import re
 from datetime import datetime, time, timedelta
 from decimal import Decimal, DecimalException
-from urllib.parse import urlencode
+from urllib.parse import quote, urlencode
 
 import vat_moss.id
 from django.conf import settings
@@ -759,6 +759,7 @@ class OrderRefundView(OrderView):
 
     def choose_form(self):
         payments = list(self.order.payments.filter(state=OrderPayment.PAYMENT_STATE_CONFIRMED))
+        comment = self.request.POST.get("comment") or self.request.GET.get("comment") or None
         if self.start_form.cleaned_data.get('mode') == 'full':
             full_refund = self.order.payment_refund_sum
         else:
@@ -800,6 +801,7 @@ class OrderRefundView(OrderView):
                             else OrderRefund.REFUND_STATE_CREATED
                         ),
                         amount=manual_value,
+                        comment=comment,
                         provider='manual'
                     ))
 
@@ -827,6 +829,7 @@ class OrderRefundView(OrderView):
                         execution_date=now(),
                         amount=giftcard_value,
                         provider='giftcard',
+                        comment=comment,
                         info=json.dumps({
                             'gift_card': giftcard.pk
                         })
@@ -857,6 +860,7 @@ class OrderRefundView(OrderView):
                             execution_date=now(),
                             amount=offsetting_value,
                             provider='offsetting',
+                            comment=comment,
                             info=json.dumps({
                                 'orders': [order.code]
                             })
@@ -891,6 +895,7 @@ class OrderRefundView(OrderView):
                             source=OrderRefund.REFUND_SOURCE_ADMIN,
                             state=OrderRefund.REFUND_STATE_CREATED,
                             amount=value,
+                            comment=comment,
                             provider=p.provider
                         ))
 
@@ -968,6 +973,7 @@ class OrderRefundView(OrderView):
             'payments': payments,
             'remainder': to_refund,
             'order': self.order,
+            'comment': comment,
             'giftcard_proposal': giftcard_proposal,
             'partial_amount': (
                 self.request.POST.get('start-partial_amount') if self.request.method == 'POST'
@@ -1098,14 +1104,16 @@ class OrderTransition(OrderView):
                 if self.order.pending_sum < 0:
                     messages.success(self.request, _('The order has been canceled. You can now select how you want to '
                                                      'transfer the money back to the user.'))
-                    return redirect(reverse('control:event.order.refunds.start', kwargs={
-                        'event': self.request.event.slug,
-                        'organizer': self.request.event.organizer.slug,
-                        'code': self.order.code
-                    }) + '?start-action=do_nothing&start-mode=partial&start-partial_amount={}&giftcard={}'.format(
-                        round_decimal(self.order.pending_sum * -1),
-                        'true' if self.req and self.req.refund_as_giftcard else 'false'
-                    ))
+                    with language(self.order.locale):
+                        return redirect(reverse('control:event.order.refunds.start', kwargs={
+                            'event': self.request.event.slug,
+                            'organizer': self.request.event.organizer.slug,
+                            'code': self.order.code
+                        }) + '?start-action=do_nothing&start-mode=partial&start-partial_amount={}&giftcard={}&comment={}'.format(
+                            round_decimal(self.order.pending_sum * -1),
+                            'true' if self.req and self.req.refund_as_giftcard else 'false',
+                            quote(gettext('Order canceled'))
+                        ))
 
                 messages.success(self.request, _('The order has been canceled.'))
         elif self.order.status == Order.STATUS_PENDING and to == 'e':
diff --git a/src/pretix/plugins/banktransfer/refund_export.py b/src/pretix/plugins/banktransfer/refund_export.py
index 04419616a9..f03b37d9a9 100644
--- a/src/pretix/plugins/banktransfer/refund_export.py
+++ b/src/pretix/plugins/banktransfer/refund_export.py
@@ -22,7 +22,7 @@ def get_refund_export_csv(refund_export: RefundExport):
     output = StreamWriter(byte_data)
 
     writer = csv.writer(output)
-    writer.writerow([_("Payer"), "IBAN", "BIC", _("Amount"), _("Currency"), _("Code")])
+    writer.writerow([_("Payer"), "IBAN", "BIC", _("Amount"), _("Currency"), _("Code"), _("Comment")])
     for row in refund_export.rows_data:
         bic = ''
         if row.get('bic'):
@@ -39,6 +39,7 @@ def get_refund_export_csv(refund_export: RefundExport):
             localize(Decimal(row['amount'])),
             refund_export.currency,
             row['id'],
+            row.get('comment') or '',
         ])
 
     filename = _get_filename(refund_export) + ".csv"
@@ -68,7 +69,7 @@ def build_sepa_xml(refund_export: RefundExport, account_holder, iban, bic):
             "IBAN": row["iban"],
             "amount": int(Decimal(row['amount']) * 100),  # in euro-cents
             "execution_date": datetime.date.today(),
-            "description": f"{_('Refund')} {refund_export.entity_slug} {row['id']}",
+            "description": f"{_('Refund')} {refund_export.entity_slug} {row['id']} {row.get('comment') or ''}".strip()[:140],
         }
         if row.get('bic'):
             try:
diff --git a/src/pretix/plugins/banktransfer/tasks.py b/src/pretix/plugins/banktransfer/tasks.py
index 00344754e4..d060865f4b 100644
--- a/src/pretix/plugins/banktransfer/tasks.py
+++ b/src/pretix/plugins/banktransfer/tasks.py
@@ -20,6 +20,7 @@ from pretix.base.services.mail import SendMailException
 from pretix.base.services.orders import change_payment_provider
 from pretix.base.services.tasks import TransactionAwareTask
 from pretix.celery_app import app
+
 from .models import BankImportJob, BankTransaction
 
 logger = logging.getLogger(__name__)
diff --git a/src/pretix/plugins/banktransfer/views.py b/src/pretix/plugins/banktransfer/views.py
index 04eabb10b7..3d2003d2dd 100644
--- a/src/pretix/plugins/banktransfer/views.py
+++ b/src/pretix/plugins/banktransfer/views.py
@@ -602,6 +602,7 @@ def _unite_transaction_rows(transaction_rows):
             "id": ", ".join(sorted(set(r['id'] for r in rows))),
             "payer": ", ".join(sorted(set(r['payer'] for r in rows))),
             "amount": sum(r['amount'] for r in rows),
+            "comment": ", ".join(r['comment'] for r in rows if r.get('comment')) or None,
         })
     return united_transactions_rows
 
@@ -649,6 +650,7 @@ class RefundExportListView(ListView):
                 transaction_rows.append({
                     "amount": refund.amount,
                     "id": refund.full_id,
+                    "comment": refund.comment,
                     **{key: data.get(key) for key in ("payer", "iban", "bic")}
                 })
                 refund.done(user=self.request.user)
diff --git a/src/pretix/plugins/reports/exporters.py b/src/pretix/plugins/reports/exporters.py
index 1161f38604..bf793d5b37 100644
--- a/src/pretix/plugins/reports/exporters.py
+++ b/src/pretix/plugins/reports/exporters.py
@@ -1,7 +1,7 @@
 import copy
 import tempfile
 from collections import OrderedDict, defaultdict
-from datetime import date, datetime, timedelta, time
+from datetime import date, datetime, time, timedelta
 from decimal import Decimal
 
 import pytz
diff --git a/src/pretix/presale/views/order.py b/src/pretix/presale/views/order.py
index c2370e108c..29d6ce2e4d 100644
--- a/src/pretix/presale/views/order.py
+++ b/src/pretix/presale/views/order.py
@@ -18,7 +18,7 @@ from django.shortcuts import get_object_or_404, redirect
 from django.utils.decorators import method_decorator
 from django.utils.functional import cached_property
 from django.utils.timezone import now
-from django.utils.translation import gettext_lazy as _
+from django.utils.translation import gettext, gettext_lazy as _
 from django.views.decorators.clickjacking import xframe_options_exempt
 from django.views.generic import TemplateView, View
 
@@ -849,7 +849,9 @@ class OrderCancelDo(EventViewMixin, OrderDetailMixin, AsyncAction, View):
             self.order.log_action('pretix.event.order.refund.requested')
             return self.success(None)
         else:
-            return self.do(self.order.pk, cancellation_fee=fee, try_auto_refund=True, refund_as_giftcard=giftcard)
+            comment = gettext('Canceled by customer')
+            return self.do(self.order.pk, cancellation_fee=fee, try_auto_refund=True, refund_as_giftcard=giftcard,
+                           comment=comment)
 
     def get_context_data(self, **kwargs):
         ctx = super().get_context_data(**kwargs)
diff --git a/src/tests/api/test_orders.py b/src/tests/api/test_orders.py
index 6e15d7c25c..67cedd2e40 100644
--- a/src/tests/api/test_orders.py
+++ b/src/tests/api/test_orders.py
@@ -201,6 +201,7 @@ TEST_REFUNDS_RES = [
         "source": "admin",
         "created": "2017-12-01T10:00:00Z",
         "execution_date": "2017-12-01T10:00:00Z",
+        "comment": None,
         "provider": "stripe",
         "state": "done",
         "amount": "23.00"
diff --git a/src/tests/plugins/banktransfer/test_refund_export.py b/src/tests/plugins/banktransfer/test_refund_export.py
index ca0b522efb..76427d2719 100644
--- a/src/tests/plugins/banktransfer/test_refund_export.py
+++ b/src/tests/plugins/banktransfer/test_refund_export.py
@@ -124,6 +124,7 @@ def test_unite_transaction_rows():
             'iban': 'DE12345678901234567890',
             'bic': 'HARKE9000',
             'id': "ROLLA-R-1",
+            'comment': None,
             'amount': Decimal("42.23"),
         },
         {
@@ -131,6 +132,7 @@ def test_unite_transaction_rows():
             'iban': 'DE111111111111111111111',
             'bic': 'ikswez2020',
             'id': "PARTY-R-1",
+            'comment': None,
             'amount': Decimal("6.50"),
         }
     ], key=_row_key_func)
@@ -143,6 +145,7 @@ def test_unite_transaction_rows():
             'iban': 'DE12345678901234567890',
             'bic': 'HARKE9000',
             'id': "ROLLA-R-1",
+            'comment': None,
             'amount': Decimal("7.77"),
         },
         {
@@ -150,6 +153,7 @@ def test_unite_transaction_rows():
             'iban': 'DE111111111111111111111',
             'bic': 'ikswez2020',
             'id': "PARTY-R-2",
+            'comment': None,
             'amount': Decimal("13.50"),
         }
     ], key=_row_key_func)
@@ -160,6 +164,7 @@ def test_unite_transaction_rows():
             'iban': 'DE12345678901234567890',
             'bic': 'HARKE9000',
             'id': "ROLLA-R-1",
+            'comment': None,
             'amount': Decimal("50.00"),
         },
         {
@@ -167,5 +172,6 @@ def test_unite_transaction_rows():
             'iban': 'DE111111111111111111111',
             'bic': 'ikswez2020',
             'id': 'PARTY-R-1, PARTY-R-2',
+            'comment': None,
             'amount': Decimal('20.00'),
         }], key=_row_key_func)