用最新的采购信息记录更新采购单的价格——BAPI_PO_CHANGE

当采购信息记录更新价格后，可以透过前台ME22N项目-->条件-->更新 来修改采购单的价格

注意：采购单部分收货、收货已完成、结案状态不可更新，更新价格后采购单可能需要重新签核

批量执行改功能则使用函数BAPI_PO_CHANGE，代码如下：

REPORT ZMMRTEST.

DATA: lv_ebeln TYPE ebeln,
      lt_item TYPE TABLE OF bapimepoitem,
      ls_item TYPE bapimepoitem,
      lt_itemx TYPE TABLE OF bapimepoitemx,
      ls_itemx TYPE bapimepoitemx,
      lt_return TYPE TABLE OF bapiret2.

lv_ebeln = '6200016316'.

ls_item-po_item = '00010'.
ls_item-calctype ='B'.
APPEND ls_item TO lt_item.

ls_itemx-po_item = '00010'.
ls_itemx-calctype ='X'.
APPEND ls_itemx TO lt_itemx.

CALL FUNCTION 'BAPI_PO_CHANGE'
  EXPORTING
    purchaseorder                = lv_ebeln
  TABLES
    return                       = lt_return
    poitem                       = lt_item
    poitemx                      = lt_itemx.

READ TABLE lt_return WITH KEY type = 'E' TRANSPORTING NO FIELDS.
IF sy-subrc = 0.
  ROLLBACK WORK.
ELSE.
  COMMIT WORK AND WAIT.
ENDIF.

cl_demo_output=>write( lt_return ).
cl_demo_output=>display(  ).

效果：