创建销售订单:BAPI_SALESORDER_CREATEFROMDAT2
创建退货销售订单:BAPI_CUSTOMERRETURN_CREATE
根据销售订单生成交货单:BAPI_DELIVERYPROCESSING_EXEC
修改外向交货单:BAPI_OUTB_DELIVERY_CHANGE
修改内向交货单:BAPI_INB_DELIVERY_CHANGE
交货单发货过账:WS_DELIVERY_UPDATE
VF01/VF04开票:BAPI_BILLINGDOC_CREATEMULTIPLE