采购订单审核函数: BAPI_PO_RELEASE 结尾加上 ENHANCEMENT ZME28_PO. "active version DATA:LS_EKKO TYPE EKKO. DATA:LS_ZEKKOADD TYPE ZEKKOADD. CLEAR:LS_EKKO,LS_ZEKKOADD. SELECT SINGLE * INTO LS_ZEKKOADD FROM ZEKKOADD WHERE EBELN = PURCHASEORDER. SELECT SINGLE * INTO L