diff --git a/so/src/private/nccloud/api/impl/so/m30/APISaleOrderMaitainImpl.java b/so/src/private/nccloud/api/impl/so/m30/APISaleOrderMaitainImpl.java
index bc2f5cd..246ec40 100644
--- a/so/src/private/nccloud/api/impl/so/m30/APISaleOrderMaitainImpl.java
+++ b/so/src/private/nccloud/api/impl/so/m30/APISaleOrderMaitainImpl.java
@@ -595,6 +595,7 @@ public class APISaleOrderMaitainImpl implements IAPISaleOrderMaitain {
                 String ybpk = hvo.getCorigcurrencyid();
                 SaleOrderBVO[] bvos = vo.getChildrenVO();
                 List<SaleOrderBVO> bvoList = new ArrayList<>(Arrays.asList(bvos));
+                SaleOrderBVO oneBvo = vo.getChildrenVO()[0];
 
                 List<Object> bodyArr = (List<Object>) objectMap.get("so_saleorder_b");
                 for (Object body : bodyArr) {
@@ -608,7 +609,11 @@ public class APISaleOrderMaitainImpl implements IAPISaleOrderMaitain {
                         SaleOrderBVO newBvo = new SaleOrderBVO();
                         newBvo.setStatus(VOStatus.NEW);
                         newBvo.setAttributeValue("pk_group", pk_group);
-                        newBvo.setAttributeValue("cprojectid", bodydata.get("cprojectid"));
+                        String cprojectid = bodydata.get("cprojectid") + "";
+                        if (oneBvo != null) {
+                            cprojectid = oneBvo.getCprojectid();
+                        }
+                        newBvo.setAttributeValue("cprojectid", cprojectid);
                         // newBvo.setAttributeValue("ctrafficorgvid", pkOrg);
                         // newBvo.setAttributeValue("csendstockorgvid", pkOrg);
                         // newBvo.setAttributeValue("csendstordocid", pkOrg);