BAPI创建委外采购订单

使用BAPI BAPI_PO_CREATE1创建委外采购订单，组件为手工输入时，有几个点需要注意：

1、已通过CS01创建过BOM的物料，创建时会自动带出components。如果要修改当前组件清单，可以通过设置pocomponents-change_id = 'E’来实现

        lv_sline = lv_sline + 1.
        ls_pocomponents-po_item = l_ebelp + 10.
        ls_pocomponents-ITEM_NO = lv_sline.
        ls_pocomponents-sched_line = 1.
        ls_pocomponents-material = ls_mdpm-matnr.
        ls_pocomponents-ITEM_CAT = '3'.
        ls_pocomponents-plant = ls_mdpm-werks.
        ls_pocomponents-entry_quantity = ls_mdpm-bdmng.
*        ls_pocomponents-entry_uom = ls_mdpm-meins.
        ls_pocomponents-iss_st_loc = ls_mdpm-lgort.
        ls_pocomponents-req_date = ls_mdpm-bdter.
        ls_pocomponents-change_id = 'E'.
        APPEND ls_pocomponents TO lt_pocomponents.