diff --git a/internal/biz/order.go b/internal/biz/order.go
index eaa147b..96df93d 100644
--- a/internal/biz/order.go
+++ b/internal/biz/order.go
@@ -12,7 +12,7 @@ func (v *VoucherBiz) CmbOrder(ctx context.Context, req *bo.OrderCreateReqBo) (or
 
 	order, err3 := v.GetByOutBizNo(ctx, req)
 	if err3 != nil {
-		return orderNo, err3
+		return "", err3
 	}
 
 	if order != nil {
@@ -20,7 +20,7 @@ func (v *VoucherBiz) CmbOrder(ctx context.Context, req *bo.OrderCreateReqBo) (or
 		if order.Status.IsFail() || order.Status.IsIng() {
 
 			if err4 := v.orderRetry(ctx, order); err4 != nil {
-				return orderNo, err4
+				return "", err4
 			}
 		}
 
@@ -29,12 +29,12 @@ func (v *VoucherBiz) CmbOrder(ctx context.Context, req *bo.OrderCreateReqBo) (or
 
 	product, err3 := v.ProductRepo.GetByProductNo(ctx, req.ProductNo)
 	if err3 != nil {
-		return orderNo, err3
+		return "", err3
 	}
 
 	order, err3 = v.order(ctx, req, product)
 	if err3 != nil {
-		return orderNo, err3
+		return "", err3
 	}
 
 	return order.OrderNo, nil