diff --git a/sf_sale/models/sale_order.py b/sf_sale/models/sale_order.py
index d53ea6a0..6508132d 100644
--- a/sf_sale/models/sale_order.py
+++ b/sf_sale/models/sale_order.py
@@ -218,6 +218,7 @@ class RePurchaseOrder(models.Model):
     def button_confirm(self):
         result = super(RePurchaseOrder, self).button_confirm()
         for item in self:
+            # 确认订单时,自动分配序列号
             if item.picking_ids:
                 for picking_id in item.picking_ids:
                     if picking_id.move_ids: