diff --git a/datacenterlight/utils.py b/datacenterlight/utils.py
index 58d9de61..f65f3588 100644
--- a/datacenterlight/utils.py
+++ b/datacenterlight/utils.py
@@ -179,7 +179,7 @@ def create_tax_id(stripe_customer_id, vat_number):
     stripe_utils = StripeUtils()
     tax_id_response = stripe_utils.create_tax_id_for_user(
         stripe_customer_id,
-        value=vat_number,
+        vat_number=vat_number,
     )
 
     tax_id_obj = tax_id_response.get('response_object')
diff --git a/datacenterlight/views.py b/datacenterlight/views.py
index 36b8e505..7110e7a8 100644
--- a/datacenterlight/views.py
+++ b/datacenterlight/views.py
@@ -548,14 +548,7 @@ class PaymentOrderView(FormView):
             )
 
             if 'response_object' in validate_result:
-                address_form.add_error(
-                    "__all__", validate_result["error"]
-                )
-                return self.render_to_response(
-                    self.get_context_data(
-                        billing_address_form=address_form
-                    )
-                )
+                raise forms.ValidationError(validate_result["error"])
 
             request.session["vat_validation_status"] = validate_result["status"]
             request.session["vat_validated_on"] = validate_result["validated_on"]