Improvements in loads.

load.py

@@ -68,7 +68,8 @@ class LoadOrder:
             'ul_warehouse': 'UL "%s" must be in warehouse "%s" to be loaded in order "%s".',
             'ul_origin': 'UL "%s" does not belong to any origin of this load order.',
             'ul_overload': 'All valid lines of load order "%s" are complete. Cannot load more ULs.',
-            'ul_data': 'Product data of UL "%s" does not match with any line of load order "%s".'})
+            'ul_data': 'Product data of UL "%s" does not match with any line of load order "%s".',
+            'draft_ul': 'Cannot change state to Draft for load order "%s" because it has loaded ULs.'})
 
     @classmethod
     def default_ul_origin_restrict(cls):
@@ -162,6 +163,15 @@ class LoadOrder:
             Move.save(moves)
         Move.do([m for r in records for l in r.lines for m in l.moves])
 
+    @classmethod
+    def draft(cls, records):
+        for record in records:
+            if record.state != 'waiting':
+                continue
+            if record.unit_loads:
+                cls.raise_user_error('draft_ul', record.rec_name)
+        super(LoadOrder, cls).draft(records)
+
     def _get_inventory_move(self, move):
         pool = Pool()
         Move = pool.get('stock.move')

locale/es_ES.po

@@ -38,6 +38,10 @@ msgid "UL \"%s\" must be in warehouse \"%s\" to be loaded in order \"%s\"."
 msgstr ""
 "La UdC \"%s\" debe encontrarse en el almacén \"%s\" para ser cargada en la orden \"%s\"."
 
+msgctxt "error:carrier.load.order:"
+msgid "Cannot change state to Draft for load order \"%s\" because it has loaded ULs."
+msgstr "No puede establecerse el estado Borrador para la orden \"%s\" porque tiene UdCs cargadas."
+
 msgctxt "error:carrier.load_uls:"
 msgid "Cannot find Unit load \"%s\"."
 msgstr "No se ha podido encontrar la UdC \"%s\"."