diff --git a/mhd_oms/src/main/java/com/mhd/oms/domain/reservationStockOutOrder/service/ReservationStockOutOrderDomainService.java b/mhd_oms/src/main/java/com/mhd/oms/domain/reservationStockOutOrder/service/ReservationStockOutOrderDomainService.java
index 851bd436b..136e53b63 100644
--- a/mhd_oms/src/main/java/com/mhd/oms/domain/reservationStockOutOrder/service/ReservationStockOutOrderDomainService.java
+++ b/mhd_oms/src/main/java/com/mhd/oms/domain/reservationStockOutOrder/service/ReservationStockOutOrderDomainService.java
@@ -1098,6 +1098,10 @@ public class ReservationStockOutOrderDomainService {
         reservationStockInOrderMapper.updateByTransportationNumber(transportationNumber);
         LoginUser loginUser = SecurityUtils.getLoginUser();
         BusinessDeliveryDetailsLink businessDeliveryDetailsLink = businessDeliveryDetailsLinkService.getOne(new QueryWrapper<BusinessDeliveryDetailsLink>().lambda().eq(BusinessDeliveryDetailsLink::getInvoiceNumber, invoiceNumber), false);
+        List<BusinessDeliveryDetailsLink> businessDeliveryDetailsLinks = businessDeliveryDetailsLinkService.list(new QueryWrapper<BusinessDeliveryDetailsLink>().lambda().eq(BusinessDeliveryDetailsLink::getInvoiceNumber, invoiceNumber));
+        if (businessDeliveryDetailsLinks!=null&&businessDeliveryDetailsLinks.size()>1) {
+            throw new ServiceException("存在发票号重复情况,请检查!");
+        }
         if (businessDeliveryDetailsLink != null) {
             businessDeliveryDetailsLink.setIsReturn(1); // 1表示已退货
             businessDeliveryDetailsLink.setUpdateBy(loginUser.getUserPo().getUserId());
@@ -1106,6 +1110,9 @@ public class ReservationStockOutOrderDomainService {
             businessDeliveryDetailsLinkService.updateById(businessDeliveryDetailsLink);
 //            String invoiceNumber1 = businessDeliveryDetailsLink.getInvoiceNumber();
             List<ReservationDeliveryDetailsLink> list = reservationDeliveryDetailsLinkService.list(new QueryWrapper<ReservationDeliveryDetailsLink>().lambda().eq(ReservationDeliveryDetailsLink::getInvoiceNumber, invoiceNumber));
+            if (list != null && !list.isEmpty() && list.size()>1) {
+                throw new ServiceException("存在发票号重复情况,请检查!");
+            }
             if (list != null && !list.isEmpty() && list.size()>0) {
                 ReservationDeliveryDetailsLink reservationDeliveryDetailsLink = list.get(0);
                 String orderNumber = reservationDeliveryDetailsLink.getOrderNumber();
@@ -1216,14 +1223,28 @@ public class ReservationStockOutOrderDomainService {
 
     /**
      * 生成出库预约单号：
+     * 生成后校验数据库中是否已存在，存在则序号加一，直至不重复为止
      */
     public String generateReserveOrderNumber() {
         SimpleDateFormat sdf = new SimpleDateFormat("yyMMdd");
         String datePart = sdf.format(new Date());
         String prefix = "C" + datePart;
         int todayCount = reservationStockOutOrderMapper.countByOrderNumberPrefix(prefix);
-        String seq = String.format("%03d", todayCount + 1);
-        return prefix + seq;
+        int seq = todayCount + 1;
+        String orderNumber;
+        do {
+            orderNumber = prefix + String.format("%03d", seq);
+            Integer count = reservationStockOutOrderMapper.selectCount(
+                    new LambdaQueryWrapper<ReservationStockOutOrder>()
+                            .eq(ReservationStockOutOrder::getOutOrderNumber, orderNumber)
+            );
+            if (count != null && count > 0) {
+                seq++;
+            } else {
+                break;
+            }
+        } while (true);
+        return orderNumber;
     }
 
     public String generateReserveOrderNumber1() {