diff --git a/erp/receivable.go b/erp/receivable.go
index d271c44..124aa98 100644
--- a/erp/receivable.go
+++ b/erp/receivable.go
@@ -81,6 +81,7 @@ type ReplyReceivableInfo struct {
 type ReceivableProductItem struct {
 	Id                int64           `json:"id"`
 	ShipmentProductId int64           `json:"shipmentProductId"`
+	PiSerial          string          `json:"piSerial"`
 	Name              string          `json:"name"`
 	Serial            string          `json:"serial"`
 	ReceivableCount   int64           `json:"receivableCount"`