Dear Renhua,
Please refer to below thread, you will understand why the reason code is not copied from Original Invoice when you make residula payment
http://scn.sap.com/thread/1611193
Julie
Dear Renhua,
Please refer to below thread, you will understand why the reason code is not copied from Original Invoice when you make residula payment
http://scn.sap.com/thread/1611193
Julie