diff --git a/modules/i3plus-pojo-wms/src/main/java/cn/estsh/i3plus/pojo/wms/dbinterface/MappingItem.java b/modules/i3plus-pojo-wms/src/main/java/cn/estsh/i3plus/pojo/wms/dbinterface/MappingItem.java
index e591fe0..f79829d 100644
--- a/modules/i3plus-pojo-wms/src/main/java/cn/estsh/i3plus/pojo/wms/dbinterface/MappingItem.java
+++ b/modules/i3plus-pojo-wms/src/main/java/cn/estsh/i3plus/pojo/wms/dbinterface/MappingItem.java
@@ -29,7 +29,7 @@ public class MappingItem {
     public String destName;
     /**
      * 目标字段的默认值，通过此默认值识别字段类型，一定要配置正确
-     * 默认值中可以使用的动态变量： #sap_date, #sap_time, #date, #time, #guid
+     * 可以使用的表达式： #date, #time, #guid, #Q.warehouse(#zone)
      */
     public Object defaultValue;
 
diff --git a/modules/i3plus-pojo-wms/src/main/java/cn/estsh/i3plus/pojo/wms/dbinterface/UpdateSyncItem.java b/modules/i3plus-pojo-wms/src/main/java/cn/estsh/i3plus/pojo/wms/dbinterface/UpdateSyncItem.java
new file mode 100644
index 0000000..2761316
--- /dev/null
+++ b/modules/i3plus-pojo-wms/src/main/java/cn/estsh/i3plus/pojo/wms/dbinterface/UpdateSyncItem.java
@@ -0,0 +1,26 @@
+package cn.estsh.i3plus.pojo.wms.dbinterface;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+/**
+ * 回写接口库的值
+ */
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class UpdateSyncItem {
+
+    /**
+     * 字段名
+     */
+    public String columnName;
+
+    /**
+     * 写入的值
+     * 支持表达式
+     * #sap_date, #sap_time, #guid
+     */
+    public String updateValue;
+}