几个函数的使用例子：更新VBRK-XBLNR，IB01设备BOM创建，LI11N输入库存盘点

最近用到一些函数，网上的相关资料不多，这里记录一下。

本文链接：https://www.cnblogs.com/hhelibeb/p/17012303.html

1，使用 RV_INVOICE_HEAD_MAINTAIN 更新VBRK-ZUNOR和VBRK-XBLNR等字段。

场景：金税发票接口需要更新发票相关字段，如VBRK-ZUNOR，VBRK-XBLNR和其它增强字段。

代码示例：

  DATA:
    xkomfk TYPE STANDARD TABLE OF komfk,
    xkomv  TYPE STANDARD TABLE OF komv,
    xthead TYPE STANDARD TABLE OF theadvb,
    xvbfs  TYPE STANDARD TABLE OF vbfs,
    xvbpa  TYPE STANDARD TABLE OF vbpavb,
    xvbrk  TYPE STANDARD TABLE OF vbrkvb,
    xvbrp  TYPE STANDARD TABLE OF vbrpvb,
    xvbss  TYPE STANDARD TABLE OF vbss.

  SELECT SINGLE * FROM vbrk
    WHERE vbeln = @is_nvbrk-vbeln
    INTO @ls_vbrk.

  CALL FUNCTION 'RV_INVOICE_DOCUMENT_READ'
    EXPORTING
      konv_read    = 'X'
      vbrk_i       = ls_vbrk
    TABLES
      xkomv        = xkomv
      xvbpa        = xvbpa
      xvbrk        = xvbrk
      xvbrp        = xvbrp
      xkomfk       = xkomfk
      xvbfs        = xvbfs
      xthead       = xthead
      xvbss        = xvbss
    EXCEPTIONS
      no_authority = 1
      OTHERS       = 2.
  IF sy-subrc <> 0.
* Implement suitable error handling here
  ENDIF.

  ls_vbrk-xblnr       = '123'.
  ls_vbrk-zuonr       = '321'.

  CALL FUNCTION 'RV_INVOICE_HEAD_MAINTAIN'
    EXPORTING
      vbrk_i = ls_vbrk
    TABLES
      xkomfk = xkomfk
      xkomv  = xkomv
      xthead = xthead
      xvbfs  = xvbfs
      xvbpa  = xvbpa
      xvbrk  = xvbrk
      xvbrp  = xvbrp
      xvbss  = xvbss.
  IF sy-subrc <> 0.
    MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno WITH
    sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4 INTO DATA(lv_dummy).
  ENDIF.

  DATA: ls_vbsk TYPE vbsk.
  ls_vbsk-mandt = sy-mandt.
  ls_vbsk-ernam = ls_vbrk-ernam.
  ls_vbsk-erdat = ls_vbrk-erdat.
  ls_vbsk-uzeit = ls_vbrk-erzet.

  CALL FUNCTION 'RV_INVOICE_DOCUMENT_ADD'
    EXPORTING
      vbsk_i = ls_vbsk
    TABLES
      xkomfk = xkomfk
      xkomv  = xkomv
      xthead = xthead
      xvbfs  = xvbfs
      xvbpa  = xvbpa
      xvbrk  = xvbrk
      xvbrp  = xvbrp
      xvbss  = xvbss.

2，用 CSAI_BOM_MAINTAIN 实现IB01设备BOM创建、IB02设备BOM修改

场景：批量上传维护设备BOM

下面的代码可以用于创建和新增设备BOM，但不能删除已有设备BOM。如要删除已有设备BOM，需设置t_stpob中的删除标记。

  DATA: ecsin         LIKE  csin,
        estkob        LIKE  stkob,
        estzub        LIKE  stzub,
        emastb        LIKE  mastb,
        items         TYPE sgt_t_bom_comp,
        t_stpob       TYPE tt_stpo.
  DATA: fl_warning LIKE  capiflag-flwarning.

    ecsin-stlty = 'E' . "设备
    ecsin-stlan = lr_data->stlan .
    ecsin-datuv = sy-datum.

    ecsin-werks = lr_data->werks.
    ecsin-equnr = lr_data->equnr1.

    CALL FUNCTION 'CSAI_BOM_READ'
      EXPORTING
        ecsin      = ecsin         
      IMPORTING
        fl_warning = fl_warning
      TABLES
        t_stpob    = t_stpob       
      EXCEPTIONS
        error      = 1
        OTHERS     = 2.
     
    t_stpob = VALUE #( BASE t_stpob
        ( posnr = lv_posnr postp = lr_data->postp idnrk = lr_data->idnrk menge = lr_data->menge ) 
      ).

    CALL FUNCTION 'CSAI_BOM_MAINTAIN'
      EXPORTING
        fl_bom_create      = 'X'
        ecsin              = ecsin         
        estkob             = estkob
        estzub             = estzub
        fl_commit_and_wait = 'X'
      IMPORTING
        fl_warning         = fl_warning
      TABLES
        t_stpob            = t_stpob 
      EXCEPTIONS
        error              = 1
        OTHERS             = 2.

3，使用 L_INV_COUNT_EXT 实现LI11N输入库存盘点。

上传盘点数据，程序实现LI01N, LI11N, LI20, LI21盘点过账功能。

其中LI01N, LI20, LI21可以用BDC实现，LI11N通过函数实现。

数据来自表LQUA，需要注意如果数量为0，则要设置零库存标识。

DATA: lt_linv TYPE STANDARD TABLE OF e1linvx.
DATA: ls_linv TYPE e1linvx.

ls_linv-lgnum = '120'.
ls_linv-lqnum = '752'.
ls_linv-lgort = 'B021'.
ls_linv-ivnum = '0000000030'.  "LI01N生成的盘点记录
ls_linv-idatu = sy-datum.
ls_linv-wdatu = sy-datum.
ls_linv-lgpla = 'B05-123'.
ls_linv-plpos = '1'.
ls_linv-lgtyp = 'B05'.
ls_linv-matnr = '000000000020000214'.
ls_linv-werks = '1000'.
ls_linv-charg = '212922123'.
ls_linv-lsonr = '12345'.
ls_linv-letyp = 'IP'.
ls_linv-menga = 2.
ls_linv-lenum = '12345'.

ls_linv-altme = 'BOT'.
IF ls_linv-menga = 0.
  ls_linv-kznul = 'X'.
ENDIF.
INSERT ls_linv INTO TABLE lt_linv.

CALL FUNCTION 'L_INV_COUNT_EXT'
  EXPORTING
    i_check_only                 = i_check_only
    i_commit                     = 'X'
  TABLES
    s_linv                       = lt_linv
  EXCEPTIONS
    either_quantity_or_empty_bin = 1
    ivnum_not_found              = 2
    check_problem                = 3
    no_count_allowed             = 4
    l_inv_read                   = 5
    bin_not_in_ivnum             = 6
    counts_not_updated           = 7
    lock_error                   = 8.

需要注意这三个功能涉及的函数都是未发布状态，如果有其它已发布函数可以实现相同功能，请优先考虑已发布函数。