1、采购入库，选取目标货位去重校验优化；2、添加功能刀具自动计算当前目标货位的值；

sf_warehouse/models/model.py

@@ -888,12 +888,11 @@ class SfStockMoveLine(models.Model):
     def _check_destination_location_id(self):
         for item in self:
             if item:
-                i = 0
                 barcode = item.destination_location_id.barcode
                 for line in item.picking_id.move_line_ids_without_package:
-                    if barcode and barcode == line.destination_location_id.barcode:
-                        i += 1
-                        if i > 1:
+                    if line.destination_location_id:
+                        if (barcode and barcode == line.destination_location_id.barcode
+                                and item.product_id != line.product_id):
                             raise ValidationError(
                                 '【%s】货位已经被占用，请重新选择！！！' % item.destination_location_id.barcode)