diff --git a/core/urls.py b/core/urls.py
index 6a853707..c0441da5 100644
--- a/core/urls.py
+++ b/core/urls.py
@@ -73,7 +73,7 @@ urlpatterns = [
     re_path(r"^register$", register, name="register"),
     # Group handling
     re_path(r"^group/$", GroupListView.as_view(), name="group_list"),
-    re_path(r"^group/new$", GroupCreateView.as_view(), name="group_new"),
+    re_path(r"^group/new/$", GroupCreateView.as_view(), name="group_new"),
     re_path(
         r"^group/(?P<group_id>[0-9]+)/$", GroupEditView.as_view(), name="group_edit"
     ),
diff --git a/core/views/group.py b/core/views/group.py
index 45472388..fa394174 100644
--- a/core/views/group.py
+++ b/core/views/group.py
@@ -37,7 +37,7 @@ from django import forms
 from ajax_select.fields import AutoCompleteSelectMultipleField
 
 from core.models import RealGroup, User
-from core.views import CanEditMixin, DetailFormView
+from core.views import CanCreateMixin, CanEditMixin, DetailFormView
 
 # Forms
 
@@ -109,13 +109,13 @@ class GroupEditView(CanEditMixin, UpdateView):
     fields = ["name", "description"]
 
 
-class GroupCreateView(CanEditMixin, CreateView):
+class GroupCreateView(CanCreateMixin, CreateView):
     """
     Add a new Group
     """
 
     model = RealGroup
-    template_name = "core/group_edit.jinja"
+    template_name = "core/create.jinja"
     fields = ["name", "description"]
 
 
diff --git a/eboutic/tests.py b/eboutic/tests.py
index 0587fde9..9d0bf2de 100644
--- a/eboutic/tests.py
+++ b/eboutic/tests.py
@@ -191,10 +191,10 @@ class EbouticTest(TestCase):
         )
 
         response = self.generate_bank_valid_answer_from_page_content(response.content)
-        self.assertTrue(response.status_code == 400)
-        self.assertTrue(
-            "Payment failed with error: SuspiciousOperation('Basket total and amount do not match'"
-            in response.content.decode("utf-8")
+        self.assertEqual(response.status_code, 500)
+        self.assertIn(
+            "Basket processing failed with error: SuspiciousOperation('Basket total and amount do not match'",
+            response.content.decode("utf-8"),
         )
 
     def test_buy_refill_product_with_credit_card(self):
diff --git a/eboutic/views.py b/eboutic/views.py
index 35b5e09b..05c91e68 100644
--- a/eboutic/views.py
+++ b/eboutic/views.py
@@ -301,9 +301,11 @@ class EtransactionAutoAnswer(View):
                     i.validate()
                     b.delete()
             except Exception as e:
-                return HttpResponse("Payment failed with error: " + repr(e), status=400)
+                return HttpResponse(
+                    "Basket processing failed with error: " + repr(e), status=500
+                )
             return HttpResponse()
         else:
             return HttpResponse(
-                "Payment failed with error: " + request.GET["Error"], status=400
+                "Payment failed with error: " + request.GET["Error"], status=202
             )