diff --git a/src/servala/api/views.py b/src/servala/api/views.py
index 7ca0d82..48845d0 100644
--- a/src/servala/api/views.py
+++ b/src/servala/api/views.py
@@ -14,7 +14,7 @@ from django.views.decorators.csrf import csrf_exempt
 from servala.api.permissions import OSBBasicAuthPermission
 from servala.core.exoscale import get_exoscale_origin
 from servala.core.models import BillingEntity, Organization, User
-from servala.core.models.service import Plan, Service
+from servala.core.models.service import Service, ServiceOffering
 
 logger = logging.getLogger(__name__)
 
@@ -90,11 +90,13 @@ class OSBServiceInstanceView(OSBBasicAuthPermission, View):
             return self._error(f"Unable to create user: {e}")
 
         try:
-            service = Service.objects.get(id=service_id)
-            plan = Plan.objects.get(id=plan_id, service_offering__service=service)
+            service = Service.objects.get(osb_service_id=service_id)
+            service_offering = ServiceOffering.objects.get(
+                osb_plan_id=plan_id, service=service
+            )
         except Service.DoesNotExist:
             return self._error(f"Unknown service_id: {service_id}")
-        except Plan.DoesNotExist:
+        except ServiceOffering.DoesNotExist:
             return self._error(
                 f"Unknown plan_id: {plan_id} for service_id: {service_id}"
             )
@@ -104,7 +106,9 @@ class OSBServiceInstanceView(OSBBasicAuthPermission, View):
             organization = Organization.objects.get(
                 osb_guid=organization_guid, origin=exoscale_origin
             )
-            self._send_service_welcome_email(request, organization, user, service, plan)
+            self._send_service_welcome_email(
+                request, organization, user, service, service_offering
+            )
             return JsonResponse({"message": "Service already enabled"}, status=200)
 
         odoo_data = {
@@ -126,7 +130,7 @@ class OSBServiceInstanceView(OSBBasicAuthPermission, View):
 
                 self._send_invitation_email(request, organization, user)
                 self._send_service_welcome_email(
-                    request, organization, user, service, plan
+                    request, organization, user, service, service_offering
                 )
 
                 return JsonResponse(
@@ -159,8 +163,10 @@ The Servala Team"""
             fail_silently=False,
         )
 
-    def _send_service_welcome_email(self, request, organization, user, service, plan):
-        service_path = f"{organization.urls.services}{service.slug}/offering/{plan.service_offering.id}/"
+    def _send_service_welcome_email(
+        self, request, organization, user, service, service_offering
+    ):
+        service_path = f"{organization.urls.services}{service.slug}/offering/{service_offering.id}/"
         service_url = request.build_absolute_uri(service_path)
 
         subject = f"Get started with {service.name} - {organization.name}"
diff --git a/src/tests/conftest.py b/src/tests/conftest.py
index 3d176ad..32499ca 100644
--- a/src/tests/conftest.py
+++ b/src/tests/conftest.py
@@ -10,7 +10,6 @@ from servala.core.models import (
 )
 from servala.core.models.service import (
     CloudProvider,
-    Plan,
     Service,
     ServiceCategory,
     ServiceOffering,
@@ -56,6 +55,7 @@ def test_service(test_service_category):
         slug="redis",
         category=test_service_category,
         description="Redis database service",
+        osb_service_id="test-service-123",
     )
 
 
@@ -73,18 +73,7 @@ def test_service_offering(test_service, test_cloud_provider):
         service=test_service,
         provider=test_cloud_provider,
         description="Redis on Exoscale",
-    )
-
-
-@pytest.fixture
-def test_plan(test_service_offering):
-    return Plan.objects.create(
-        name="Small",
-        description="Small Redis plan",
-        term=1,
-        service_offering=test_service_offering,
-        features={"memory": "1GB", "connections": 100},
-        pricing={"monthly": 10.0},
+        osb_plan_id="test-plan-123",
     )
 
 
diff --git a/src/tests/test_api_exoscale.py b/src/tests/test_api_exoscale.py
index fa6fc02..a14bd44 100644
--- a/src/tests/test_api_exoscale.py
+++ b/src/tests/test_api_exoscale.py
@@ -50,16 +50,16 @@ def test_successful_onboarding_new_organization(
     mock_odoo_success,
     osb_client,
     test_service,
-    test_plan,
+    test_service_offering,
     valid_osb_payload,
     exoscale_origin,
     instance_id,
 ):
-    valid_osb_payload["service_id"] = test_service.id
-    valid_osb_payload["plan_id"] = test_plan.id
+    valid_osb_payload["service_id"] = test_service.osb_service_id
+    valid_osb_payload["plan_id"] = test_service_offering.osb_plan_id
 
     response = osb_client.put(
-        f"/v2/service_instances/{instance_id}",
+        f"/api/osb/v2/service_instances/{instance_id}",
         data=json.dumps(valid_osb_payload),
         content_type="application/json",
     )
@@ -102,7 +102,7 @@ def test_successful_onboarding_new_organization(
 def test_duplicate_organization_returns_existing(
     osb_client,
     test_service,
-    test_plan,
+    test_service_offering,
     valid_osb_payload,
     exoscale_origin,
     instance_id,
@@ -113,11 +113,11 @@ def test_duplicate_organization_returns_existing(
         origin=exoscale_origin,
     )
 
-    valid_osb_payload["service_id"] = test_service.id
-    valid_osb_payload["plan_id"] = test_plan.id
+    valid_osb_payload["service_id"] = test_service.osb_service_id
+    valid_osb_payload["plan_id"] = test_service_offering.osb_plan_id
 
     response = osb_client.put(
-        f"/v2/service_instances/{instance_id}",
+        f"/api/osb/v2/service_instances/{instance_id}",
         data=json.dumps(valid_osb_payload),
         content_type="application/json",
     )
@@ -133,15 +133,15 @@ def test_duplicate_organization_returns_existing(
 def test_unauthenticated_osb_api_request_fails(
     client,
     test_service,
-    test_plan,
+    test_service_offering,
     valid_osb_payload,
     instance_id,
 ):
-    valid_osb_payload["service_id"] = test_service.id
-    valid_osb_payload["plan_id"] = test_plan.id
+    valid_osb_payload["service_id"] = test_service.osb_service_id
+    valid_osb_payload["plan_id"] = test_service_offering.osb_plan_id
 
     response = client.put(
-        f"/v2/service_instances/{instance_id}",
+        f"/api/osb/v2/service_instances/{instance_id}",
         data=json.dumps(valid_osb_payload),
         content_type="application/json",
     )
@@ -169,14 +169,14 @@ def test_unauthenticated_osb_api_request_fails(
 def test_missing_required_fields_error(
     osb_client,
     test_service,
-    test_plan,
+    test_service_offering,
     valid_osb_payload,
     field_to_remove,
     expected_error,
     instance_id,
 ):
-    valid_osb_payload["service_id"] = test_service.id
-    valid_osb_payload["plan_id"] = test_plan.id
+    valid_osb_payload["service_id"] = test_service.osb_service_id
+    valid_osb_payload["plan_id"] = test_service_offering.osb_plan_id
 
     if isinstance(field_to_remove, tuple):
         if field_to_remove[0] == "context":
@@ -188,7 +188,7 @@ def test_missing_required_fields_error(
             del valid_osb_payload[field_to_remove]
 
     response = osb_client.put(
-        f"/v2/service_instances/{instance_id}",
+        f"/api/osb/v2/service_instances/{instance_id}",
         data=json.dumps(valid_osb_payload),
         content_type="application/json",
     )
@@ -204,7 +204,7 @@ def test_invalid_service_id_error(osb_client, valid_osb_payload, instance_id):
     valid_osb_payload["plan_id"] = 1
 
     response = osb_client.put(
-        f"/v2/service_instances/{instance_id}",
+        f"/api/osb/v2/service_instances/{instance_id}",
         data=json.dumps(valid_osb_payload),
         content_type="application/json",
     )
@@ -218,11 +218,11 @@ def test_invalid_service_id_error(osb_client, valid_osb_payload, instance_id):
 def test_invalid_plan_id_error(
     osb_client, test_service, valid_osb_payload, instance_id
 ):
-    valid_osb_payload["service_id"] = test_service.id
+    valid_osb_payload["service_id"] = test_service.osb_service_id
     valid_osb_payload["plan_id"] = 99999
 
     response = osb_client.put(
-        f"/v2/service_instances/{instance_id}",
+        f"/api/osb/v2/service_instances/{instance_id}",
         data=json.dumps(valid_osb_payload),
         content_type="application/json",
     )
@@ -230,21 +230,21 @@ def test_invalid_plan_id_error(
     assert response.status_code == 400
     response_data = json.loads(response.content)
     assert (
-        f"Unknown plan_id: 99999 for service_id: {test_service.id}"
+        f"Unknown plan_id: 99999 for service_id: {test_service.osb_service_id}"
         in response_data["error"]
     )
 
 
 @pytest.mark.django_db
 def test_empty_users_array_error(
-    osb_client, test_service, test_plan, valid_osb_payload, instance_id
+    osb_client, test_service, test_service_offering, valid_osb_payload, instance_id
 ):
-    valid_osb_payload["service_id"] = test_service.id
-    valid_osb_payload["plan_id"] = test_plan.id
+    valid_osb_payload["service_id"] = test_service.osb_service_id
+    valid_osb_payload["plan_id"] = test_service_offering.osb_plan_id
     valid_osb_payload["parameters"]["users"] = []
 
     response = osb_client.put(
-        f"/v2/service_instances/{instance_id}",
+        f"/api/osb/v2/service_instances/{instance_id}",
         data=json.dumps(valid_osb_payload),
         content_type="application/json",
     )
@@ -256,17 +256,17 @@ def test_empty_users_array_error(
 
 @pytest.mark.django_db
 def test_multiple_users_error(
-    osb_client, test_service, test_plan, valid_osb_payload, instance_id
+    osb_client, test_service, test_service_offering, valid_osb_payload, instance_id
 ):
-    valid_osb_payload["service_id"] = test_service.id
-    valid_osb_payload["plan_id"] = test_plan.id
+    valid_osb_payload["service_id"] = test_service.osb_service_id
+    valid_osb_payload["plan_id"] = test_service_offering.osb_plan_id
     valid_osb_payload["parameters"]["users"] = [
         {"email": "user1@example.com", "full_name": "User One"},
         {"email": "user2@example.com", "full_name": "User Two"},
     ]
 
     response = osb_client.put(
-        f"/v2/service_instances/{instance_id}",
+        f"/api/osb/v2/service_instances/{instance_id}",
         data=json.dumps(valid_osb_payload),
         content_type="application/json",
     )
@@ -278,16 +278,16 @@ def test_multiple_users_error(
 
 @pytest.mark.django_db
 def test_empty_email_address_error(
-    osb_client, test_service, test_plan, valid_osb_payload, instance_id
+    osb_client, test_service, test_service_offering, valid_osb_payload, instance_id
 ):
-    valid_osb_payload["service_id"] = test_service.id
-    valid_osb_payload["plan_id"] = test_plan.id
+    valid_osb_payload["service_id"] = test_service.osb_service_id
+    valid_osb_payload["plan_id"] = test_service_offering.osb_plan_id
     valid_osb_payload["parameters"]["users"] = [
         {"email": "", "full_name": "User With No Email"},
     ]
 
     response = osb_client.put(
-        f"/v2/service_instances/{instance_id}",
+        f"/api/osb/v2/service_instances/{instance_id}",
         data=json.dumps(valid_osb_payload),
         content_type="application/json",
     )
@@ -300,7 +300,7 @@ def test_empty_email_address_error(
 @pytest.mark.django_db
 def test_invalid_json_error(osb_client, instance_id):
     response = osb_client.put(
-        f"/v2/service_instances/{instance_id}",
+        f"/api/osb/v2/service_instances/{instance_id}",
         data="invalid json{",
         content_type="application/json",
     )
@@ -315,17 +315,17 @@ def test_user_creation_with_name_parsing(
     mock_odoo_success,
     osb_client,
     test_service,
-    test_plan,
+    test_service_offering,
     valid_osb_payload,
     exoscale_origin,
     instance_id,
 ):
-    valid_osb_payload["service_id"] = test_service.id
-    valid_osb_payload["plan_id"] = test_plan.id
+    valid_osb_payload["service_id"] = test_service.osb_service_id
+    valid_osb_payload["plan_id"] = test_service_offering.osb_plan_id
     valid_osb_payload["parameters"]["users"][0]["full_name"] = "John Doe Smith"
 
     response = osb_client.put(
-        f"/v2/service_instances/{instance_id}",
+        f"/api/osb/v2/service_instances/{instance_id}",
         data=json.dumps(valid_osb_payload),
         content_type="application/json",
     )
@@ -341,17 +341,17 @@ def test_email_normalization(
     mock_odoo_success,
     osb_client,
     test_service,
-    test_plan,
+    test_service_offering,
     valid_osb_payload,
     exoscale_origin,
     instance_id,
 ):
-    valid_osb_payload["service_id"] = test_service.id
-    valid_osb_payload["plan_id"] = test_plan.id
+    valid_osb_payload["service_id"] = test_service.osb_service_id
+    valid_osb_payload["plan_id"] = test_service_offering.osb_plan_id
     valid_osb_payload["parameters"]["users"][0]["email"] = "  TEST@EXAMPLE.COM  "
 
     response = osb_client.put(
-        f"/v2/service_instances/{instance_id}",
+        f"/api/osb/v2/service_instances/{instance_id}",
         data=json.dumps(valid_osb_payload),
         content_type="application/json",
     )
@@ -366,16 +366,16 @@ def test_odoo_integration_failure_handling(
     mock_odoo_failure,
     osb_client,
     test_service,
-    test_plan,
+    test_service_offering,
     valid_osb_payload,
     exoscale_origin,
     instance_id,
 ):
-    valid_osb_payload["service_id"] = test_service.id
-    valid_osb_payload["plan_id"] = test_plan.id
+    valid_osb_payload["service_id"] = test_service.osb_service_id
+    valid_osb_payload["plan_id"] = test_service_offering.osb_plan_id
 
     response = osb_client.put(
-        f"/v2/service_instances/{instance_id}",
+        f"/api/osb/v2/service_instances/{instance_id}",
         data=json.dumps(valid_osb_payload),
         content_type="application/json",
     )
@@ -387,11 +387,16 @@ def test_odoo_integration_failure_handling(
 
 @pytest.mark.django_db
 def test_organization_creation_with_context_only(
-    mock_odoo_success, osb_client, test_service, test_plan, exoscale_origin, instance_id
+    mock_odoo_success,
+    osb_client,
+    test_service,
+    test_service_offering,
+    exoscale_origin,
+    instance_id,
 ):
     payload = {
-        "service_id": test_service.id,
-        "plan_id": test_plan.id,
+        "service_id": test_service.osb_service_id,
+        "plan_id": test_service_offering.osb_plan_id,
         "context": {
             "organization_guid": "fallback-org-guid",
             "organization_name": "Fallback Organization",
@@ -407,7 +412,7 @@ def test_organization_creation_with_context_only(
     }
 
     response = osb_client.put(
-        f"/v2/service_instances/{instance_id}",
+        f"/api/osb/v2/service_instances/{instance_id}",
         data=json.dumps(payload),
         content_type="application/json",
     )