SAP ABAP 发货过账WS_DELIVERY_UPDATE

DATA:ls_vbkok LIKE vbkok,
       lv_error TYPE xfeld,
       it_prott LIKE prott OCCURS 0 WITH HEADER LINE,  "Return Message
       it_vbpok LIKE vbpok OCCURS 0 WITH HEADER LINE.  "Delivery items
DATA:lv_wadat TYPE likp-wadat_ist.

SELECT SINGLE  wadat_ist "dn的移动日期
    FROM  likp
    INTO  lv_wadat
    WHERE vbeln = "交货号
    ls_vbkok-vbeln_vl       = "交货号
    ls_vbkok-wabuc          = 'X'.
    IF lv_wadat+0(6) <> sy-datum+0(6)."移动日期不等于系统当前年月属于跨月就用接口日期
      lv_wadat = "接口日期
    ENDIF.
    ls_vbkok-wadat_ist      = lv_wadat.

    CALL FUNCTION 'WS_DELIVERY_UPDATE'
      EXPORTING
        vbkok_wa                  = ls_vbkok
        update_picking            = 'X'
        commit                    = 'X'
        delivery                  = "交货号
      IMPORTING
        ef_error_in_goods_issue_0 = lv_error
      TABLES
        prot                      = it_prott
        vbpok_tab                 = it_vbpok
      EXCEPTIONS
        error_message             = 1
        OTHERS                    = 2.