diff --git a/ext/custom-addons/dp_custom/__manifest__.py b/ext/custom-addons/dp_custom/__manifest__.py
index 033fbd75..769c3272 100644
--- a/ext/custom-addons/dp_custom/__manifest__.py
+++ b/ext/custom-addons/dp_custom/__manifest__.py
@@ -45,6 +45,7 @@
         'views/sale_views.xml',
         'views/material_type_views.xml',
         'views/product_views.xml',
+        'views/ir_attachment_views.xml',
         'security/ir.model.access.csv',
     ],
     'installable': True,
diff --git a/ext/custom-addons/dp_custom/models/__init__.py b/ext/custom-addons/dp_custom/models/__init__.py
index 4d297f47..6f18c9e1 100644
--- a/ext/custom-addons/dp_custom/models/__init__.py
+++ b/ext/custom-addons/dp_custom/models/__init__.py
@@ -28,3 +28,4 @@ from . import stock
 from . import sale
 from . import material_type
 from . import product
+from . import ir_attachment
diff --git a/ext/custom-addons/dp_custom/models/ir_attachment.py b/ext/custom-addons/dp_custom/models/ir_attachment.py
new file mode 100644
index 00000000..5f0cc232
--- /dev/null
+++ b/ext/custom-addons/dp_custom/models/ir_attachment.py
@@ -0,0 +1,46 @@
+# -*- coding: utf-8 -*-
+##############################################################################
+#
+#    datenpol gmbh
+#    Copyright (C) 2013-TODAY datenpol gmbh (<http://www.datenpol.at/>)
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Affero General Public License as
+#    published by the Free Software Foundation, either version 3 of the
+#    License, or (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU Affero General Public License for more details.
+#
+#    You should have received a copy of the GNU Affero General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+##############################################################################
+from odoo import models, fields, api, _
+from odoo.exceptions import ValidationError
+
+
+class Attachment(models.Model):
+    _inherit = 'ir.attachment'
+
+    from_designbox = fields.Boolean(string='Import von Designbox', readonly=True)
+
+    @api.multi
+    def write(self, vals):
+        for record in self:
+            if record.from_designbox:
+                raise ValidationError(
+                    _("Dokumente, die aus der Designbox importiert wurden, können nicht gelöscht werden."))
+
+        return super(Attachment, self).write(vals)
+
+    @api.multi
+    def unlink(self):
+        for record in self:
+            if record.from_designbox:
+                raise ValidationError(
+                    _("Dokumente, die aus der Designbox importiert wurden, können nicht gelöscht werden."))
+
+        return super(Attachment, self).unlink()
diff --git a/ext/custom-addons/dp_custom/models/res_partner.py b/ext/custom-addons/dp_custom/models/res_partner.py
index 910f3acc..de046354 100644
--- a/ext/custom-addons/dp_custom/models/res_partner.py
+++ b/ext/custom-addons/dp_custom/models/res_partner.py
@@ -36,9 +36,9 @@ class PartnerEventListener(Component):
         if record.active and record.portal_id:
             if 'property_product_pricelist' in fields:
                 for contact in record.child_ids:
-                    self.env['product.pricelist.item'].with_delay().job_export_portal_price(contact)
+                    self.env['res.partner'].with_delay().job_export_portal_price(contact)
             if 'parent_id' in fields:
-                self.env['product.pricelist.item'].with_delay().job_export_portal_price(record)
+                self.env['res.partner'].with_delay().job_export_portal_price(record)
 
 
 class Partner(models.Model):
diff --git a/ext/custom-addons/dp_custom/models/sale.py b/ext/custom-addons/dp_custom/models/sale.py
index 199fbb74..52c50edb 100644
--- a/ext/custom-addons/dp_custom/models/sale.py
+++ b/ext/custom-addons/dp_custom/models/sale.py
@@ -106,7 +106,7 @@ class SaleOrder(models.Model):
         order_id = self.create(vals)
         if attachment_vals:
             order_id.pg_create_sale_order_attachments(attachment_vals)
-        if attachment_vals:
+        if order_line_vals:
             order_id.pg_create_order_lines(order_line_vals)
         return {'id': order_id.id, 'name': order_id.name}
 
@@ -144,7 +144,8 @@ class SaleOrder(models.Model):
                 'product_id': vals['product_id'],
                 'price_unit': vals['price_unit'],
                 'product_uom_qty': vals['product_uom_qty'],
-                'lot_id': lot_id
+                'lot_id': lot_id,
+                'from_designbox': True,
             }))
         return order_lines
 
@@ -153,6 +154,7 @@ class SaleOrder(models.Model):
         attachment_vals = {
             'name': vals['filename'],
             'datas': vals['binary'],
+            'from_designbox': True,
             'datas_fname': vals['filename'],
             'res_model': record._name,
             'res_id': record.id,
@@ -180,6 +182,7 @@ class SaleOrderLine(models.Model):
     _inherit = 'sale.order.line'
 
     lot_id = fields.Many2one(comodel_name='stock.production.lot', string='Lot')
+    from_designbox = fields.Boolean(string='Import von Designbox', readonly=True)
 
     @api.model
     def correct_values(self, vals):
diff --git a/ext/custom-addons/dp_custom/views/ir_attachment_views.xml b/ext/custom-addons/dp_custom/views/ir_attachment_views.xml
new file mode 100644
index 00000000..e308a379
--- /dev/null
+++ b/ext/custom-addons/dp_custom/views/ir_attachment_views.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <record id="ir_attachment_form_view" model="ir.ui.view">
+        <field name="name">ir_attachment_form_view</field>
+        <field name="model">ir.attachment</field>
+        <field name="inherit_id" ref="base.view_attachment_form"/>
+        <field name="arch" type="xml">
+            <field name="mimetype" position="after">
+                <field name="from_designbox"/>
+            </field>
+        </field>
+    </record>
+</odoo>
diff --git a/ext/custom-addons/dp_custom/views/sale_views.xml b/ext/custom-addons/dp_custom/views/sale_views.xml
index 072f60f8..6afc32c2 100644
--- a/ext/custom-addons/dp_custom/views/sale_views.xml
+++ b/ext/custom-addons/dp_custom/views/sale_views.xml
@@ -19,12 +19,15 @@
             </field>
             <xpath expr="//field[@name='order_line']/form//field[@name='product_id']" position="after">
                 <field name="lot_id"/>
+                <field name="from_designbox"/>
             </xpath>
             <xpath expr="//field[@name='order_line']/tree//field[@name='product_id']" position="after">
                 <field name="lot_id"/>
+                <field name="from_designbox"/>
             </xpath>
             <xpath expr="//field[@name='order_line']/kanban//field[@name='product_id']" position="after">
                 <field name="lot_id"/>
+                <field name="from_designbox"/>
             </xpath>
         </field>
     </record>