diff --git a/ik3cloud/paymentRefund.go b/ik3cloud/paymentRefund.go
index 0cdac57..1cd9e70 100644
--- a/ik3cloud/paymentRefund.go
+++ b/ik3cloud/paymentRefund.go
@@ -26,10 +26,11 @@ type ArgsPaymentRefundSave struct {
 }
 
 type PaymentRefundCostItem struct {
-	PaymentPurpose string          // 原付款用途
-	Amount         decimal.Decimal // 金额
-	BankAccount    string          // 我方银行账号
-	InvoiceSerial  string          // 发票号
+	PaymentPurpose   string          // 原付款用途
+	Amount           decimal.Decimal // 金额
+	BankAccount      string          // 我方银行账号
+	InvoiceSerial    string          // 发票号
+	DepartmentNumber string          // 部门编码
 }
 
 // Save @TITLE 保存付款退款单