diff --git a/sf_manufacturing/models/stock.py b/sf_manufacturing/models/stock.py
index 1e0b0849..901b521b 100644
--- a/sf_manufacturing/models/stock.py
+++ b/sf_manufacturing/models/stock.py
@@ -611,6 +611,18 @@ class StockPicking(models.Model):
             return sequence_id
 
     def button_validate(self):
+        # 校验“收料入库单、客供料入库单”是否已经分配序列号，如果没有分配则自动分配
+        if self.picking_type_id.use_existing_lots is False and self.picking_type_id.use_create_lots is True:
+            for move in self.move_ids:
+                if not move.move_line_nosuggest_ids:
+                    move.action_show_details()
+                else:
+                    # 对已经生成的序列号做唯一性校验，如果重复则重新生成新的序列号
+                    line_lot_name = [line_id.lot_name for line_id in move.move_line_nosuggest_ids]
+                    lot_ids = self.env['stock.lot'].sudo().search([('name', 'in', line_lot_name)])
+                    if lot_ids:
+                        move.action_clear_lines_show_details()
+                        move.action_show_details()
         res = super().button_validate()
         picking_type_in = self.env.ref('sf_manufacturing.outcontract_picking_in').id
         if res is True and self.picking_type_id.id == picking_type_in:
@@ -844,7 +856,8 @@ class ReStockMove(models.Model):
                     self.next_serial = self._get_tool_next_serial(self.company_id, self.product_id, self.origin)
                 else:
                     self.next_serial = self.env['stock.lot']._get_next_serial(self.company_id, self.product_id)
-                    if self.picking_type_id.sequence_code == 'DL' and not self.move_line_nosuggest_ids:
+                    if (self.picking_type_id.use_existing_lots is False
+                            and self.picking_type_id.use_create_lots is True and not self.move_line_nosuggest_ids):
                         self.action_assign_serial_show_details()
             elif self.product_id.tracking == "lot":
                 self._put_tool_lot(self.company_id, self.product_id, self.origin)