diff --git a/modules/automation/automation.py b/modules/automation/automation.py
index 5386343..9cdea10 100644
--- a/modules/automation/automation.py
+++ b/modules/automation/automation.py
@@ -265,7 +265,8 @@ class AutomationDocument(ModelSQL, ModelView, Workflow):
                                 logger.info("WITH_DEC:%s",sale_line)
                                 vlot = sale_line.lots[0]
                                 lqt = LotQt.search([('lot_s','=',vlot.id)])
-                                lqt.lot_s.updateVirtualPart(lot_net_weight,sh,lqt.lot_s,'only sale')
+                                if lqt:
+                                    lqt[0].lot_s.updateVirtualPart(lot_net_weight,sh,lqt.lot_s,'only sale')
                                 logger.info("WITH_DEC_LOT_NET:%s",lot_net_weight)
                             else:
                                 sale = Sale()