diff --git a/ext/custom-addons/dp_custom/models/sale.py b/ext/custom-addons/dp_custom/models/sale.py
index df114fa9..543ab619 100644
--- a/ext/custom-addons/dp_custom/models/sale.py
+++ b/ext/custom-addons/dp_custom/models/sale.py
@@ -193,14 +193,17 @@ class SaleOrder(models.Model):
         if not partner:
             raise ValidationError(
                 _("Der Kunde mit der Portal-ID \'%s\' kann nicht zugeordnet werden") % vals['portal_id'])
+        del vals['portal_id']
         delivery_partner = self.env['res.partner']
         delivery_vals = {}
         if vals.get('portal_delivery_id', False):
             delivery_partner = self.env['res.partner'].search([('portal_id', '=', vals['portal_delivery_id'])])
             delivery_vals['portal_id'] = vals['portal_delivery_id']
+            del vals['portal_delivery_id']
         for key in list(vals.keys()):
             if key.startswith('delivery_'):
                 delivery_vals[key.replace('delivery_', '')] = vals[key]
+                del vals[key]
 
         delivery_partner.with_context(delivery_partner=True).check_not_specified_fields(delivery_vals)
         delivery_vals = delivery_partner.correct_values(delivery_vals)
@@ -219,6 +222,8 @@ class SaleOrder(models.Model):
 
         attachment_vals = vals.get('attachment_ids', False)
         order_line_vals = vals.get('order_lines', False)
+        del vals['attachment_ids']
+        del vals['order_lines']
         self.check_not_specified_fields(vals)
         vals = self.correct_values(vals)
         payment_term = partner.property_payment_term_id