diff --git a/src/openforms/registrations/contrib/zgw_apis/tests/test_admin.py b/src/openforms/registrations/contrib/zgw_apis/tests/test_admin.py
deleted file mode 100644
index 1bb0038486..0000000000
--- a/src/openforms/registrations/contrib/zgw_apis/tests/test_admin.py
+++ /dev/null
@@ -1,63 +0,0 @@
-from django.urls import reverse
-from django.utils.translation import gettext as _
-
-import requests
-import requests_mock
-from django_webtest import WebTest
-from maykin_2fa.test import disable_admin_mfa
-from zgw_consumers.api_models.constants import VertrouwelijkheidsAanduidingen
-
-from openforms.accounts.tests.factories import SuperUserFactory
-
-from .factories import ZGWApiGroupConfigFactory
-
-
-@disable_admin_mfa()
-class ZGWApiGroupConfigAdminTests(WebTest):
-    @requests_mock.Mocker()
-    def test_admin_while_services_are_down(self, m):
-        m.register_uri(
-            requests_mock.ANY, requests_mock.ANY, exc=requests.ConnectTimeout
-        )
-        zgw_group = ZGWApiGroupConfigFactory.create(
-            zrc_service__api_root="https://zaken-1.nl/api/v1/",
-            zrc_service__oas="https://zaken-1.nl/api/v1/schema/openapi.yaml",
-            drc_service__api_root="https://documenten-1.nl/api/v1/",
-            drc_service__oas="https://documenten-1.nl/api/v1/schema/openapi.yaml",
-            ztc_service__api_root="https://catalogus-1.nl/api/v1/",
-            ztc_service__oas="https://catalogus-1.nl/api/v1/schema/openapi.yaml",
-            zaaktype="https://catalogi-1.nl/api/v1/zaaktypen/1",
-            informatieobjecttype="https://catalogi-1.nl/api/v1/informatieobjecttypen/1",
-            organisatie_rsin="000000000",
-            zaak_vertrouwelijkheidaanduiding=VertrouwelijkheidsAanduidingen.openbaar,
-        )
-        superuser = SuperUserFactory.create()
-
-        response = self.app.get(
-            reverse("admin:zgw_apis_zgwapigroupconfig_change", args=(zgw_group.pk,)),
-            user=superuser,
-        )
-
-        self.assertEqual(response.status_code, 200)
-        form = response.forms["zgwapigroupconfig_form"]
-        self.assertEqual(
-            form["zaaktype"].value, "https://catalogi-1.nl/api/v1/zaaktypen/1"
-        )
-        error_node = response.pyquery(
-            ".field-zaaktype .openforms-error-widget .openforms-error-widget__column small"
-        )
-        self.assertEqual(
-            error_node.text(),
-            _(
-                "Could not load data - enable and check the request "
-                "logs for more details."
-            ),
-        )
-
-        with self.subTest("submitting form doesn't clear configuration"):
-            form.submit()
-
-            zgw_group.refresh_from_db()
-            self.assertEqual(
-                zgw_group.zaaktype, "https://catalogi-1.nl/api/v1/zaaktypen/1"
-            )
diff --git a/src/openforms/registrations/contrib/zgw_apis/tests/test_backend.py b/src/openforms/registrations/contrib/zgw_apis/tests/test_backend.py
index 7372001617..c0585965b5 100644
--- a/src/openforms/registrations/contrib/zgw_apis/tests/test_backend.py
+++ b/src/openforms/registrations/contrib/zgw_apis/tests/test_backend.py
@@ -1265,6 +1265,7 @@ def test_zgw_backend_default_author(self, m):
         zgw_form_options = dict(
             zgw_api_group=self.zgw_group,
             zaaktype="https://catalogi.nl/api/v1/zaaktypen/1",
+            informatieobjecttype="https://catalogi.nl/api/v1/informatieobjecttypen/1",
         )
         self.install_mocks(m)
 
@@ -1409,7 +1410,11 @@ def test_zgw_backend_has_reference_after_pre_submission(self, m):
         )
         submission = SubmissionFactory.create(
             form__registration_backend="zgw-create-zaak",
-            form__registration_backend_options={"zgw_api_group": self.zgw_group.pk},
+            form__registration_backend_options={
+                "zgw_api_group": self.zgw_group.pk,
+                "zaaktype": "https://catalogi.nl/api/v1/zaaktypen/1",
+                "informatieobjecttype": "https://catalogi.nl/api/v1/informatieobjecttypen/1",
+            },
             completed_not_preregistered=True,
         )
         assert submission.public_registration_reference == ""
diff --git a/src/openforms/registrations/contrib/zgw_apis/tests/test_models.py b/src/openforms/registrations/contrib/zgw_apis/tests/test_models.py
index 49a4e5db84..57a225c303 100644
--- a/src/openforms/registrations/contrib/zgw_apis/tests/test_models.py
+++ b/src/openforms/registrations/contrib/zgw_apis/tests/test_models.py
@@ -4,39 +4,27 @@
 from .factories import ZGWApiGroupConfigFactory
 
 
-class ZGWBackendTests(TestCase):
-    def setUp(self):
-        self.config = ZGWApiGroupConfigFactory.create(
+class ZGWApiGroupModelTests(TestCase):
+    @classmethod
+    def setUpTestData(cls):
+        config = ZGWApiGroupConfigFactory.create(
             zrc_service__api_root="https://zaken.nl/api/v1/",
             drc_service__api_root="https://documenten.nl/api/v1/",
             ztc_service__api_root="https://catalogus.nl/api/v1/",
         )
-        self.config.full_clean()
+        config.full_clean()
+        cls.config = config
 
     def test_model_validate(self):
-        self.config.zaaktype = "https://catalogus.nl/api/v1/zaaktype/1"
-        self.config.informatieobjecttype = "https://catalogus.nl/api/v1/info/1"
         self.config.rsin = "619183020"
         self.config.full_clean()
 
-    def test_model_invalid_zaaktype(self):
-        with self.assertRaises(ValidationError):
-            self.config.zaaktype = "https://BAD_DOMAIN.nl/api/v1/zaak/1"
-            self.config.full_clean()
-
-    def test_model_invalid_informatieobjecttype(self):
-        with self.assertRaises(ValidationError):
-            self.config.informatieobjecttype = "https://BAD_DOMAIN.nl/api/v1/info/1"
-            self.config.full_clean()
-
     def test_model_invalid_rsin(self):
         with self.assertRaises(ValidationError):
             self.config.organisatie_rsin = "063-08836"
             self.config.full_clean()
 
     def test_model_string(self):
-        api_group = ZGWApiGroupConfigFactory.create(
-            name="ZGW API test",
-        )
+        api_group = ZGWApiGroupConfigFactory.create(name="ZGW API test")
 
         self.assertEqual(str(api_group), "ZGW API test")
diff --git a/src/openforms/registrations/contrib/zgw_apis/tests/test_validators.py b/src/openforms/registrations/contrib/zgw_apis/tests/test_validators.py
index 091923f3bf..cdfa735689 100644
--- a/src/openforms/registrations/contrib/zgw_apis/tests/test_validators.py
+++ b/src/openforms/registrations/contrib/zgw_apis/tests/test_validators.py
@@ -44,6 +44,7 @@ def test_valid_omschrijving(self, m):
         data = {
             "zgw_api_group": self.zgw_group.pk,
             "zaaktype": "https://catalogus.nl/api/v1/zaaktypen/111",
+            "informatieobjecttype": "https://catalogi.nl/api/v1/informatieobjecttypen/1",
             "medewerker_roltype": "Some description",
         }
 
@@ -69,6 +70,7 @@ def test_invalid_omschrijving(self, m):
         data = {
             "zgw_api_group": self.zgw_group.pk,
             "zaaktype": "https://catalogus.nl/api/v1/zaaktypen/111",
+            "informatieobjecttype": "https://catalogi.nl/api/v1/informatieobjecttypen/1",
             "medewerker_roltype": "Some description",
         }
 
@@ -88,7 +90,12 @@ def test_invalid_omschrijving(self, m):
 class ZGWAPIGroupConfigTest(TestCase):
     def test_no_zgw_api_group_and_no_default(self):
         # No zgw_api_group provided
-        serializer = ZaakOptionsSerializer(data={})
+        serializer = ZaakOptionsSerializer(
+            data={
+                "zaaktype": "https://catalogi.nl/api/v1/zaaktypen/1",
+                "informatieobjecttype": "https://catalogi.nl/api/v1/informatieobjecttypen/1",
+            }
+        )
 
         # No ZgwConfig.default_zgw_api_group configured
         with patch(
@@ -111,8 +118,6 @@ def test_existing_provided_variable_in_specific_zaaktype(self, m):
             drc_service__api_root="https://documenten.nl/api/v1/",
             ztc_service__api_root="https://catalogus.nl/api/v1/",
         )
-        zgw_group.zaaktype = "https://zaken.nl/api/v1/zaaktypen/1"
-        zgw_group.save()
         m.get(
             "https://catalogus.nl/api/v1/eigenschappen?zaaktype=https%3A%2F%2Fzaken.nl%2Fapi%2Fv1%2Fzaaktypen%2F1",
             status_code=200,
@@ -143,6 +148,8 @@ def test_existing_provided_variable_in_specific_zaaktype(self, m):
 
         data = {
             "zgw_api_group": zgw_group.pk,
+            "zaaktype": "https://zaken.nl/api/v1/zaaktypen/1",
+            "informatieobjecttype": "https://catalogi.nl/api/v1/informatieobjecttypen/1",
             "property_mappings": [
                 {"component_key": "textField", "eigenschap": "a property name"}
             ],
@@ -160,8 +167,6 @@ def test_provided_variable_does_not_exist_in_specific_zaaktype(self, m):
             drc_service__api_root="https://documenten.nl/api/v1/",
             ztc_service__api_root="https://catalogus.nl/api/v1/",
         )
-        zgw_group.zaaktype = "https://zaken.nl/api/v1/zaaktypen/1"
-        zgw_group.save()
         m.get(
             "https://catalogus.nl/api/v1/eigenschappen?zaaktype=https%3A%2F%2Fzaken.nl%2Fapi%2Fv1%2Fzaaktypen%2F1",
             status_code=200,
@@ -192,6 +197,8 @@ def test_provided_variable_does_not_exist_in_specific_zaaktype(self, m):
 
         data = {
             "zgw_api_group": zgw_group.pk,
+            "zaaktype": "https://zaken.nl/api/v1/zaaktypen/1",
+            "informatieobjecttype": "https://catalogi.nl/api/v1/informatieobjecttypen/1",
             "property_mappings": [
                 {"component_key": "textField", "eigenschap": "wrong variable"}
             ],
diff --git a/src/openforms/registrations/contrib/zgw_apis/tests/test_zgw_api_config.py b/src/openforms/registrations/contrib/zgw_apis/tests/test_zgw_api_config.py
index b1126c73c0..3bacf1a146 100644
--- a/src/openforms/registrations/contrib/zgw_apis/tests/test_zgw_api_config.py
+++ b/src/openforms/registrations/contrib/zgw_apis/tests/test_zgw_api_config.py
@@ -28,18 +28,14 @@ def setUpTestData(cls):
         cls.zgw_group1 = ZGWApiGroupConfigFactory.create(
             zrc_service__api_root="https://zaken-1.nl/api/v1/",
             drc_service__api_root="https://documenten-1.nl/api/v1/",
-            ztc_service__api_root="https://catalogus-1.nl/api/v1/",
-            zaaktype="https://catalogi-1.nl/api/v1/zaaktypen/1",
-            informatieobjecttype="https://catalogi-1.nl/api/v1/informatieobjecttypen/1",
+            ztc_service__api_root="https://catalogi-1.nl/api/v1/",
             organisatie_rsin="000000000",
             zaak_vertrouwelijkheidaanduiding=VertrouwelijkheidsAanduidingen.openbaar,
         )
         cls.zgw_group2 = ZGWApiGroupConfigFactory.create(
             zrc_service__api_root="https://zaken-2.nl/api/v1/",
             drc_service__api_root="https://documenten-2.nl/api/v1/",
-            ztc_service__api_root="https://catalogus-2.nl/api/v1/",
-            zaaktype="https://catalogi-2.nl/api/v1/zaaktypen/1",
-            informatieobjecttype="https://catalogi-2.nl/api/v1/informatieobjecttypen/1",
+            ztc_service__api_root="https://catalogi-2.nl/api/v1/",
             organisatie_rsin="000000001",
             zaak_vertrouwelijkheidaanduiding=VertrouwelijkheidsAanduidingen.beperkt_openbaar,
         )
@@ -108,7 +104,7 @@ def install_mocks(self, m):
         )
 
         m.get(
-            "https://catalogus-1.nl/api/v1/roltypen?zaaktype=https%3A%2F%2Fcatalogi-1.nl%2Fapi%2Fv1%2Fzaaktypen%2F1&omschrijvingGeneriek=initiator",
+            "https://catalogi-1.nl/api/v1/roltypen?zaaktype=https%3A%2F%2Fcatalogi-1.nl%2Fapi%2Fv1%2Fzaaktypen%2F1&omschrijvingGeneriek=initiator",
             status_code=200,
             json={
                 "count": 1,
@@ -118,7 +114,7 @@ def install_mocks(self, m):
                     generate_oas_component(
                         "catalogi",
                         "schemas/RolType",
-                        url="https://catalogus-1.nl/api/v1/roltypen/1",
+                        url="https://catalogi-1.nl/api/v1/roltypen/1",
                     )
                 ],
             },
@@ -131,7 +127,7 @@ def install_mocks(self, m):
             ),
         )
         m.get(
-            "https://catalogus-1.nl/api/v1/statustypen?zaaktype=https%3A%2F%2Fcatalogi-1.nl%2Fapi%2Fv1%2Fzaaktypen%2F1",
+            "https://catalogi-1.nl/api/v1/statustypen?zaaktype=https%3A%2F%2Fcatalogi-1.nl%2Fapi%2Fv1%2Fzaaktypen%2F1",
             status_code=200,
             json={
                 "count": 2,
@@ -141,19 +137,19 @@ def install_mocks(self, m):
                     generate_oas_component(
                         "catalogi",
                         "schemas/StatusType",
-                        url="https://catalogus-1.nl/api/v1/statustypen/2",
+                        url="https://catalogi-1.nl/api/v1/statustypen/2",
                         volgnummer=2,
                     ),
                     generate_oas_component(
                         "catalogi",
                         "schemas/StatusType",
-                        url="https://catalogus-1.nl/api/v1/statustypen/1",
+                        url="https://catalogi-1.nl/api/v1/statustypen/1",
                         volgnummer=1,
                     ),
                 ],
             },
         )
-        m.get("https://catalogus-1.nl/api/v1/zaaktypen", status_code=200, json=[])
+        m.get("https://catalogi-1.nl/api/v1/zaaktypen", status_code=200, json=[])
         m.post(
             "https://zaken-1.nl/api/v1/statussen",
             status_code=201,
@@ -225,7 +221,7 @@ def install_mocks(self, m):
         )
 
         m.get(
-            "https://catalogus-2.nl/api/v1/roltypen?zaaktype=https%3A%2F%2Fcatalogi-2.nl%2Fapi%2Fv1%2Fzaaktypen%2F1&omschrijvingGeneriek=initiator",
+            "https://catalogi-2.nl/api/v1/roltypen?zaaktype=https%3A%2F%2Fcatalogi-2.nl%2Fapi%2Fv1%2Fzaaktypen%2F1&omschrijvingGeneriek=initiator",
             status_code=200,
             json={
                 "count": 1,
@@ -235,13 +231,13 @@ def install_mocks(self, m):
                     generate_oas_component(
                         "catalogi",
                         "schemas/RolType",
-                        url="https://catalogus-2.nl/api/v1/roltypen/1",
+                        url="https://catalogi-2.nl/api/v1/roltypen/1",
                     )
                 ],
             },
         )
         m.get(
-            "https://catalogus-2.nl/api/v1/roltypen?zaaktype=https%3A%2F%2Fcatalogi-2.nl%2Fapi%2Fv1%2Fzaaktypen%2F2&omschrijvingGeneriek=initiator",
+            "https://catalogi-2.nl/api/v1/roltypen?zaaktype=https%3A%2F%2Fcatalogi-2.nl%2Fapi%2Fv1%2Fzaaktypen%2F2&omschrijvingGeneriek=initiator",
             status_code=200,
             json={
                 "count": 1,
@@ -251,12 +247,12 @@ def install_mocks(self, m):
                     generate_oas_component(
                         "catalogi",
                         "schemas/RolType",
-                        url="https://catalogus-2.nl/api/v1/roltypen/2",
+                        url="https://catalogi-2.nl/api/v1/roltypen/2",
                     )
                 ],
             },
         )
-        m.get("https://catalogus-2.nl/api/v1/zaaktypen", status_code=200, json=[])
+        m.get("https://catalogi-2.nl/api/v1/zaaktypen", status_code=200, json=[])
         m.post(
             "https://zaken-2.nl/api/v1/rollen",
             status_code=201,
@@ -265,7 +261,7 @@ def install_mocks(self, m):
             ),
         )
         m.get(
-            "https://catalogus-2.nl/api/v1/statustypen?zaaktype=https%3A%2F%2Fcatalogi-2.nl%2Fapi%2Fv1%2Fzaaktypen%2F1",
+            "https://catalogi-2.nl/api/v1/statustypen?zaaktype=https%3A%2F%2Fcatalogi-2.nl%2Fapi%2Fv1%2Fzaaktypen%2F1",
             status_code=200,
             json={
                 "count": 2,
@@ -275,13 +271,13 @@ def install_mocks(self, m):
                     generate_oas_component(
                         "catalogi",
                         "schemas/StatusType",
-                        url="https://catalogus-2.nl/api/v1/statustypen/2",
+                        url="https://catalogi-2.nl/api/v1/statustypen/2",
                         volgnummer=2,
                     ),
                     generate_oas_component(
                         "catalogi",
                         "schemas/StatusType",
-                        url="https://catalogus-2.nl/api/v1/statustypen/1",
+                        url="https://catalogi-2.nl/api/v1/statustypen/1",
                         volgnummer=1,
                     ),
                 ],
@@ -309,7 +305,11 @@ def test_the_right_api_is_used(self, m):
             form_key="field1",
             _component_configuration_path="components.0",
         )
-        zgw_form_options = {"zgw_api_group": self.zgw_group2}
+        zgw_form_options = {
+            "zgw_api_group": self.zgw_group2,
+            "zaaktype": "https://catalogi-2.nl/api/v1/zaaktypen/1",
+            "informatieobjecttype": "https://catalogi-2.nl/api/v1/informatieobjecttypen/1",
+        }
         self.install_mocks(m)
 
         plugin = ZGWRegistration("zgw")
@@ -340,8 +340,8 @@ def test_per_form_overwrites(self, m):
         )
         zgw_form_options = dict(
             zgw_api_group=self.zgw_group2,  # Configure to use the second ZGW API
-            zaaktype="https://catalogi-2.nl/api/v1/zaaktypen/2",  # Use zaaktype 2 instead of 1
-            informatieobjecttype="https://catalogi-2.nl/api/v1/informatieobjecttypen/2",  # Use iot 2 instead of 1
+            zaaktype="https://catalogi-2.nl/api/v1/zaaktypen/2",
+            informatieobjecttype="https://catalogi-2.nl/api/v1/informatieobjecttypen/2",
             organisatie_rsin="000000123",
             zaak_vertrouwelijkheidaanduiding=VertrouwelijkheidsAanduidingen.confidentieel,
             doc_vertrouwelijkheidaanduiding=VertrouwelijkheidsAanduidingen.geheim,
@@ -496,11 +496,11 @@ def test_check_config(self, m):
 
         self.assertEqual(list_zaken_1.hostname, "zaken-1.nl")
         self.assertEqual(list_documenten_1.hostname, "documenten-1.nl")
-        self.assertEqual(list_zaaktypen_1.hostname, "catalogus-1.nl")
+        self.assertEqual(list_zaaktypen_1.hostname, "catalogi-1.nl")
 
         self.assertEqual(list_zaken_2.hostname, "zaken-2.nl")
         self.assertEqual(list_documenten_2.hostname, "documenten-2.nl")
-        self.assertEqual(list_zaaktypen_2.hostname, "catalogus-2.nl")
+        self.assertEqual(list_zaaktypen_2.hostname, "catalogi-2.nl")
 
     def test_check_config_no_zrc_service(self, m):
         self.install_mocks(m)
diff --git a/src/openforms/registrations/tests/test_pre_registration.py b/src/openforms/registrations/tests/test_pre_registration.py
index 498c9575e4..3e7e425e03 100644
--- a/src/openforms/registrations/tests/test_pre_registration.py
+++ b/src/openforms/registrations/tests/test_pre_registration.py
@@ -54,7 +54,11 @@ def test_if_preregistration_complete_retry_doesnt_repeat_it(self):
         zgw_group = ZGWApiGroupConfigFactory.create()
         submission = SubmissionFactory.create(
             form__registration_backend="zgw-create-zaak",
-            form__registration_backend_options={"zgw_api_group": zgw_group.pk},
+            form__registration_backend_options={
+                "zgw_api_group": zgw_group.pk,
+                "zaaktype": "https://catalogi.nl/api/v1/zaaktypen/1",
+                "informatieobjecttype": "https://catalogi.nl/api/v1/informatieobjecttypen/1",
+            },
             completed_not_preregistered=True,
         )
 
@@ -102,7 +106,11 @@ def test_pre_registration_task_errors_but_does_not_raise_error(self):
         zgw_group = ZGWApiGroupConfigFactory.create()
         submission = SubmissionFactory.create(
             form__registration_backend="zgw-create-zaak",
-            form__registration_backend_options={"zgw_api_group": zgw_group.pk},
+            form__registration_backend_options={
+                "zgw_api_group": zgw_group.pk,
+                "zaaktype": "https://catalogi.nl/api/v1/zaaktypen/1",
+                "informatieobjecttype": "https://catalogi.nl/api/v1/informatieobjecttypen/1",
+            },
             completed_not_preregistered=True,
         )
 
@@ -193,7 +201,11 @@ def test_retry_doesnt_overwrite_internal_reference(self):
         zgw_group = ZGWApiGroupConfigFactory.create()
         submission = SubmissionFactory.create(
             form__registration_backend="zgw-create-zaak",
-            form__registration_backend_options={"zgw_api_group": zgw_group.pk},
+            form__registration_backend_options={
+                "zgw_api_group": zgw_group.pk,
+                "zaaktype": "https://catalogi.nl/api/v1/zaaktypen/1",
+                "informatieobjecttype": "https://catalogi.nl/api/v1/informatieobjecttypen/1",
+            },
             completed_not_preregistered=True,
         )
 
@@ -224,7 +236,11 @@ def test_retry_keeps_track_of_internal_reference(self):
         zgw_group = ZGWApiGroupConfigFactory.create()
         submission = SubmissionFactory.create(
             form__registration_backend="zgw-create-zaak",
-            form__registration_backend_options={"zgw_api_group": zgw_group.pk},
+            form__registration_backend_options={
+                "zgw_api_group": zgw_group.pk,
+                "zaaktype": "https://catalogi.nl/api/v1/zaaktypen/1",
+                "informatieobjecttype": "https://catalogi.nl/api/v1/informatieobjecttypen/1",
+            },
             completed_not_preregistered=True,
         )
 
@@ -258,7 +274,11 @@ def test_retry_after_too_many_attempts_skips(self, m_get_solo):
         zgw_group = ZGWApiGroupConfigFactory.create()
         submission = SubmissionFactory.create(
             form__registration_backend="zgw-create-zaak",
-            form__registration_backend_options={"zgw_api_group": zgw_group.pk},
+            form__registration_backend_options={
+                "zgw_api_group": zgw_group.pk,
+                "zaaktype": "https://catalogi.nl/api/v1/zaaktypen/1",
+                "informatieobjecttype": "https://catalogi.nl/api/v1/informatieobjecttypen/1",
+            },
             completed_not_preregistered=True,
             registration_attempts=3,
         )
@@ -286,7 +306,11 @@ def test_update_registration_result_after_pre_registration(self):
         zgw_group = ZGWApiGroupConfigFactory.create()
         submission = SubmissionFactory.create(
             form__registration_backend="zgw-create-zaak",
-            form__registration_backend_options={"zgw_api_group": zgw_group.pk},
+            form__registration_backend_options={
+                "zgw_api_group": zgw_group.pk,
+                "zaaktype": "https://catalogi.nl/api/v1/zaaktypen/1",
+                "informatieobjecttype": "https://catalogi.nl/api/v1/informatieobjecttypen/1",
+            },
             completed_not_preregistered=True,
         )
 
@@ -309,7 +333,11 @@ def test_traceback_removed_from_result_after_success(self, m_get_solo):
         zgw_group = ZGWApiGroupConfigFactory.create()
         submission = SubmissionFactory.create(
             form__registration_backend="zgw-create-zaak",
-            form__registration_backend_options={"zgw_api_group": zgw_group.pk},
+            form__registration_backend_options={
+                "zgw_api_group": zgw_group.pk,
+                "zaaktype": "https://catalogi.nl/api/v1/zaaktypen/1",
+                "informatieobjecttype": "https://catalogi.nl/api/v1/informatieobjecttypen/1",
+            },
             completed_not_preregistered=True,
             registration_attempts=1,
             registration_result={"traceback": "An error, how sad."},
diff --git a/src/openforms/submissions/tests/test_on_completion_retry_chain.py b/src/openforms/submissions/tests/test_on_completion_retry_chain.py
index 016473345e..8c3ca3195f 100644
--- a/src/openforms/submissions/tests/test_on_completion_retry_chain.py
+++ b/src/openforms/submissions/tests/test_on_completion_retry_chain.py
@@ -40,7 +40,11 @@ def test_payment_status_update_now_succeeds(self):
             needs_on_completion_retry=True,
             registration_success=True,
             form__registration_backend="zgw-create-zaak",
-            form__registration_backend_options={"zgw_api_group": zgw_group.pk},
+            form__registration_backend_options={
+                "zgw_api_group": zgw_group.pk,
+                "zaaktype": "https://catalogi.nl/api/v1/zaaktypen/1",
+                "informatieobjecttype": "https://catalogi.nl/api/v1/informatieobjecttypen/1",
+            },
             form__payment_backend="ogone-legacy",
             registration_result={
                 "zaak": {
@@ -90,7 +94,11 @@ def test_payment_status_update_still_fails(self):
             needs_on_completion_retry=True,
             registration_success=True,
             form__registration_backend="zgw-create-zaak",
-            form__registration_backend_options={"zgw_api_group": zgw_group.pk},
+            form__registration_backend_options={
+                "zgw_api_group": zgw_group.pk,
+                "zaaktype": "https://catalogi.nl/api/v1/zaaktypen/1",
+                "informatieobjecttype": "https://catalogi.nl/api/v1/informatieobjecttypen/1",
+            },
             form__payment_backend="ogone-legacy",
             registration_result={
                 "zaak": {
@@ -151,7 +159,11 @@ def test_backend_registration_still_fails(self, mock_update_payment):
             needs_on_completion_retry=True,
             registration_failed=True,
             form__registration_backend="zgw-create-zaak",
-            form__registration_backend_options={"zgw_api_group": zgw_group.pk},
+            form__registration_backend_options={
+                "zgw_api_group": zgw_group.pk,
+                "zaaktype": "https://catalogi.nl/api/v1/zaaktypen/1",
+                "informatieobjecttype": "https://catalogi.nl/api/v1/informatieobjecttypen/1",
+            },
             # registration failed, so an internal reference was created
             public_registration_reference="OF-1234",
         )
@@ -184,7 +196,11 @@ def test_backend_preregistration_still_fails(self, mock_update_payment):
             pre_registration_completed=False,
             registration_failed=True,
             form__registration_backend="zgw-create-zaak",
-            form__registration_backend_options={"zgw_api_group": zgw_group.pk},
+            form__registration_backend_options={
+                "zgw_api_group": zgw_group.pk,
+                "zaaktype": "https://catalogi.nl/api/v1/zaaktypen/1",
+                "informatieobjecttype": "https://catalogi.nl/api/v1/informatieobjecttypen/1",
+            },
             # registration failed, so an internal reference was created
             public_registration_reference="OF-1234",
         )
@@ -223,7 +239,11 @@ def test_backend_registration_succeeds(self, mock_update_payment):
             needs_on_completion_retry=True,
             registration_failed=True,
             form__registration_backend="zgw-create-zaak",
-            form__registration_backend_options={"zgw_api_group": zgw_group.pk},
+            form__registration_backend_options={
+                "zgw_api_group": zgw_group.pk,
+                "zaaktype": "https://catalogi.nl/api/v1/zaaktypen/1",
+                "informatieobjecttype": "https://catalogi.nl/api/v1/informatieobjecttypen/1",
+            },
             # registration failed, so an internal reference was created
             public_registration_reference="OF-1234",
             with_completed_payment=True,
@@ -251,7 +271,12 @@ def test_backend_registration_succeeds(self, mock_update_payment):
         mock_register.assert_called_once()
         # downstream tasks should not have been called - chain should abort
         mock_update_payment.assert_called_once_with(
-            submission, {"zgw_api_group": zgw_group}
+            submission,
+            {
+                "zgw_api_group": zgw_group,
+                "zaaktype": "https://catalogi.nl/api/v1/zaaktypen/1",
+                "informatieobjecttype": "https://catalogi.nl/api/v1/informatieobjecttypen/1",
+            },
         )
         self.assertNotEqual(submission.last_register_date, original_register_date)
         self.assertEqual(submission.public_registration_reference, "OF-1234")