// Get master object data
Map masterData = master["containerDocument"] as Map
// Get customer ID (refer to corresponding object for other fields)
String accountId = masterData["account_id"] as String
log.info("account_id:"+accountId)
// Get detail object List
List detailList = detail["SalesOrderProductObj"] as List
// Iterate through detail objects
detailList.each{item ->
  Map detailDataMap = item as Map
  // Get detail object data
  Map detailData = detailDataMap["containerDocument"] as Map
  // Get product ID (refer to corresponding object for other fields)
  String productId = detailData["product_id"] as String
  log.info("product_id:"+productId)
}

rebate.each{ item ->
    Map rebateData = item as Map
    Map data = rebateData["containerDocument"] as Map
    // Modify result value
    data.put("remark", "Function modified result value 111")
}
Map result = ["result": rebate]
return result