diff --git a/src/main/java/com/nis/util/ConfigConvertUtil.java b/src/main/java/com/nis/util/ConfigConvertUtil.java
index d834058d3..ba227a52e 100644
--- a/src/main/java/com/nis/util/ConfigConvertUtil.java
+++ b/src/main/java/com/nis/util/ConfigConvertUtil.java
@@ -866,8 +866,9 @@ public class ConfigConvertUtil {
 			return gsonToJson(userRegionMap);
 		}else if(serviceId.equals(592)){
 			return "{}";
+		}else{
+			return "0";
 		}
-		return null;
 	}
 	public static Map<String,Object> convertCommonGroupMaatTable(CfgIndexInfo cfgIndexInfo, List<Map<String, Object>> cfgList){
 		Map<String,Object> maatTableMap=new HashMap<>();