‘BAPI_PO_CHANGE’ 更改PO交货计划行/组件

REPORT  z_barry_test LINE-SIZE 140 NO STANDARD PAGE HEADING .

DATA :return TYPE bapiret2 OCCURS 0 WITH HEADER LINE,
      poschedule TYPE bapimeposchedule OCCURS 0 WITH HEADER LINE,
      poschedulex TYPE bapimeposchedulx OCCURS 0 WITH HEADER LINE,
      pocomponents LIKE bapimepocomponent OCCURS 0 WITH HEADER LINE,
      pocomponentsx LIKE bapimepocomponentx OCCURS 0 WITH HEADER LINE.

PARAMETERS p_ebeln LIKE ekko-ebeln.

START-OF-SELECTION.

  CALL FUNCTION ‘BAPI_PO_GETDETAIL1′
    EXPORTING
      purchaseorder = p_ebeln
    TABLES
      return        = return
      pocomponents  = pocomponents
      poschedule    = poschedule.

  READ TABLE poschedule INDEX 1.
  CLEAR poschedule[].

  poschedule-quantity = poschedule-quantity - 1 .
  APPEND poschedule.
  poschedulex-po_item = poschedule-po_item.
  poschedulex-sched_line = poschedule-sched_line .
  poschedulex-quantity = ‘X’.
  APPEND poschedulex TO poschedulex.

  READ TABLE pocomponents WITH KEY po_item = poschedule-po_item
                                   sched_line = poschedule-sched_line.
  DELETE pocomponents WHERE po_item = poschedule-po_item AND
                                      sched_line = poschedule-sched_line .
  pocomponents-entry_quantity = pocomponents-entry_quantity - 1 .
  pocomponents-change_id = ‘U’.
  APPEND pocomponents .
  pocomponentsx-po_item = pocomponents-po_item .
  pocomponentsx-sched_line = pocomponents-sched_line .
  pocomponentsx-item_no = pocomponents-item_no .
  pocomponentsx-entry_quantity = ‘X’.
  pocomponentsx-change_id = ‘X’.
  APPEND pocomponentsx.

  poschedule-sched_line = poschedule-sched_line + 1 .
  poschedule-delivery_date = ‘2010.11.11′.
  poschedule-quantity = 1.
  APPEND poschedule.
  poschedulex-po_item = poschedule-po_item.
  poschedulex-sched_line = poschedule-sched_line .
  poschedulex-quantity = ‘X’.
  poschedulex-delivery_date = ‘X’.
  APPEND poschedulex TO poschedulex.
  READ TABLE pocomponents WITH KEY po_item = poschedule-po_item
                                   sched_line = poschedule-sched_line.
  DELETE pocomponents WHERE po_item = poschedule-po_item AND
                                      sched_line = poschedule-sched_line .
  pocomponents-entry_quantity = 1 .
  pocomponents-sched_line = pocomponents-sched_line + 1 .
  pocomponents-change_id = ‘I’.
  APPEND pocomponents .
  pocomponentsx-po_item = pocomponents-po_item .
  pocomponentsx-sched_line = pocomponents-sched_line  .
  pocomponentsx-item_no = pocomponents-item_no  .
  pocomponentsx-entry_quantity = ‘X’.
  pocomponentsx-material = ‘X’.
  pocomponentsx-change_id = ‘X’.
  APPEND pocomponentsx.

  CALL FUNCTION ‘BAPI_PO_CHANGE’
    EXPORTING
      purchaseorder = p_ebeln
    TABLES
      return        = return
      poschedule    = poschedule
      poschedulex   = poschedulex
      pocomponents  = pocomponents
      pocomponentsx = pocomponentsx.

  CALL FUNCTION ‘BAPI_TRANSACTION_COMMIT’
    EXPORTING
      wait = ‘X’.

  WRITE ‘OK’.

### 使用 `BAPI_PO_CHANGE` 修改 SAP 采购订单数量 为了修改 SAP 中的采购订单数量,可以使用 `BAPI_PO_CHANGE` 函数模块。此函数允许更新现有采购订单中的各种属性,包括项目级别的数量字段。 以下是具体实现方法: #### 调用参数设置 在调用 `BAPI_PO_CHANGE` 前需准备输入结构体来指定要更改的具体项及其新值。对于调整数量的操作主要涉及两个表:一个是用于传递采购订单头信息;另一个则是明细条目(`PO_ITEMS`)的信息,在这里定义需要变更的商品编号以及新的订购量[^1]。 ```abap DATA: lt_itemscheds TYPE TABLE OF bapiparex, ls_itemscheds LIKE LINE OF lt_itemscheds. " 设置采购订单号和其他必要条件... CALL FUNCTION 'BAPI_PO_GETDETAIL' EXPORTING purchaseorder = lv_purchase_order_number IMPORTING purchasdocument = wa_purdoc. ``` #### 更新物品详情 针对特定商品增加或减少其预定数目时,则应构建相应的调度记录并加入到上述提到的数据集中去。注意每一条这样的记录都代表了一次独立的变化操作,并且必须指明对应的物料序号(Item Number)以便系统能够准确定位待处理的对象[^2]。 ```abap ls_itemscheds-number = '1'. " 物料序列号, 需依据实际情况设定 ls_itemscheds-purchasingvaluefield-name = 'ORDERQUANTITY'. ls_itemscheds-purchasingvaluefield-value = new_quantity. " 新的数量值 APPEND ls_itemscheds TO lt_itemscheds. ``` #### 执 BAPI 变更请求 最后一步就是实际执这个事务性的命令了。这通常意味着提交整个交易以保存所做的任何改动至数据库中永久存储起来。如果一切顺利的话,那么所选项目的订货数就会按照预期被刷新成最新的数值。 ```abap CALL FUNCTION 'BAPI_PO_CHANGE' EXPORTING purCHASEORDER = lv_purchase_order_number * OTHER_PARAMETERS... AS NEEDED TABLES poitems = lt_poitems poschedulelines = lt_itemscheds EXCEPTIONS document_not_found = 1 no_change_necessary = 2 error_occurred = 3 others = 99. IF sy-subrc <> 0. " Handle errors here as appropriate ENDIF. ``` 通过以上步骤即可完成利用 `BAPI_PO_CHANGE` 对于已存在采购单内某件货物所需总量做出相应增减的任务。
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