Add origin to message

edocument.py

@@ -54,8 +54,7 @@ class EdocumentMessage(ModelView, ModelSQL):
     code = fields.Char('Code')
     message = fields.Text('Message')
     sequence = fields.Many2One('ir.sequence', 'Sequence')
-    origin = fields.Reference('Origin', selection='get_origin',
-        required=True)
+    origin = fields.Reference('Origin', selection='get_origin')
 
     def get_rec_name(self, name):
         return 'EW' + '{0:0>6}'.format(self.code)
@@ -179,6 +178,7 @@ class EdocumentImportMixin(EdocumentMixin):
                     for k, v in value.items():
                         setattr(new_object, k, v)
                     new_object.message = message
+                    message.origin = new_object
                     objects.append(new_object)
             if imported:
                 manager._handle_imported(imported)