Minor fix

message.xml

@@ -13,7 +13,7 @@ this repository contains the full copyright notices and license terms. -->
             <field name="text">Product not available but another service</field>
         </record>
         <record model="ir.message" id="msg_product_not_stock">
-            <field name="text">Product "%s" without stock.</field>
+            <field name="text">Product "%(product)s" without stock.</field>
         </record>
     </data>
 </tryton>

stock.py

@@ -1,11 +1,14 @@
 # This file is part of Tryton.  The COPYRIGHT file at the top level of
 # this repository contains the full copyright notices and license terms.
-from datetime import timedelta, time
+from datetime import time
+
+from trytond.i18n import gettext
 from trytond.model import fields, ModelView, ModelSQL, Workflow
 from trytond.pool import Pool, PoolMeta
 from trytond.wizard import Wizard, StateView, StateTransition, Button
 from trytond.transaction import Transaction
 from trytond.pyson import Eval
+from trytond.exceptions import UserWarning
 from sql import Table
 
 
@@ -149,10 +152,10 @@ class ShipmentOutReturn(metaclass=PoolMeta):
         for shipment in shipments:
             for move in shipment.incoming_moves:
                 quantity = shipment.validate_product_quantity(move)
-                print(quantity, move.quantity)
                 if quantity < move.quantity:
-                    warning_name = '%s.shipment_out_return.product_not_stock' % move.id
-                    cls.raise_user_warning(warning_name, 'product_not_stock', move.product.name)
+                    raise UserWarning(gettext(
+                        'rental.msg_product_not_stock', product=move.product.name
+                    ))
         super(ShipmentOutReturn, cls).receive(shipments)
 
     def validate_product_quantity(self, move):