[FIX] stock: confusing error message

In case of a picking type where stock move lines are not shown, clicking
on 'Put in Pack' without 'Done' quantitites set shows a confusing error
message.

closes odoo/odoo#40928

X-original-commit: 76b72ab5953c1fc72e3c06464fd1c65e6420a4b3
Related: odoo/enterprise#6906
Signed-off-by: Nicolas Martinelli (nim) <nim@odoo.com>

addons/stock/i18n/stock.pot

@@ -4039,6 +4039,12 @@ msgstr ""
 msgid "Planned Transfer"
 msgstr ""
 
+#. module: stock
+#: code:addons/stock/models/stock_picking.py:0
+#, python-format
+msgid "Please add 'Done' qantitites to the picking to create a new pack."
+msgstr ""
+
 #. module: stock
 #: code:addons/stock/models/stock_picking.py:0
 #, python-format

addons/stock/models/stock_picking.py

@@ -1184,7 +1184,7 @@ class Picking(models.Model):
                     res = self._put_in_pack(move_line_ids)
                 return res
             else:
-                raise UserError(_('All the products currently reserved in the picking are already in a pack. Please add products to the picking to create a new pack.'))
+                raise UserError(_("Please add 'Done' qantitites to the picking to create a new pack."))
 
     def button_scrap(self):
         self.ensure_one()