SAP客户标准信用额度修改和创建

好吧，前提要说一下，信贷是到客户的信贷范围级别的。

FUNCTION zfm_credit.
*"----------------------------------------------------------------------
*"*"本地接口：
*"  TABLES
*"      T_TAB STRUCTURE  ZJKS001 OPTIONAL
*"      T_TAB_I STRUCTURE  ZJKS002 OPTIONAL
*"----------------------------------------------------------------------

  DATA:gs_zsds001 TYPE zsds001.
  DATA:gs_zsds002 TYPE zsds002.
  DATA:lv_func TYPE char50."结构ID
  DATA:s_tab TYPE zjks001."表头结构
  DATA:s_tab_i TYPE zjks002."表体结构
  DATA:gt_table TYPE ddfields,
       gs_table TYPE dfies.
  DATA:gs_knka TYPE knka,
       gs_knkk TYPE knkk,
       gv_knka TYPE knka,
       gv_knkk TYPE knkk,
       gv_upd  TYPE cdpos-chngind.
  DATA:gv_name1 TYPE kna1-name1.
  DATA:gt_kna1 TYPE TABLE OF zsknb1,
       gs_kna1 TYPE          zsknb1.
  DATA:lv_line TYPE i.

  DATA:gs_zsds003 TYPE zsds003.

  DATA:gt_message TYPE TABLE OF bdcmsgcoll.
  DATA:gs_message TYPE bdcmsgcoll.
  DATA:lv_str TYPE string.
  DATA:lv_int TYPE i.

  FIELD-SYMBOLS:  <dyn_wa>,"表头
                  <dyn_la>,"表体
                  <dyn_field>."字段
  DATA lv_col_sting TYPE string .

  DEFINE mesgadd."返回消息赋值
    S_TAB-FIELDNAME = &.
    S_TAB-VALUE = &.
    IF & is not INITIAL .
      APPEND S_TAB TO T_TAB.
    ENDIF.
  END-OF-DEFINITION.

  DEFINE mesgaddi."返回消息赋值
    lv_col_sting = & .
    CONCATENATE & lv_col_sting into S_TAB_I-FIELDNAME .
    SHIFT S_TAB_I-FIELDNAME RIGHT DELETING TRAILING space.
    CONDENSE S_TAB_I-FIELDNAME NO-GAPS.
    S_TAB_I-VALUE = &.
    CONDENSE S_TAB_I-VALUE NO-GAPS.
    APPEND S_TAB_I TO T_TAB_I.
  END-OF-DEFINITION.

  CLEAR:gs_zsds001,gs_zsds002,lv_func,s_tab,gt_table[],gs_zsds003,lv_str,gt_message.

  READ TABLE t_tab INTO s_tab WITH KEY fieldname = 'FUNCTION'.
  IF sy-subrc = .
    lv_func = s_tab-value.
  ELSE.
    REFRESH:t_tab.
    mesgadd:'RETURN' 'E',
            'MESSAGE' '未指定函数！'.
    RETURN.
  ENDIF.

  CASE lv_func.
    WHEN 'CREDIT02'.
      ASSIGN gs_zsds003 TO <dyn_wa>."表头结构
    WHEN OTHERS.
  ENDCASE.

  LOOP AT t_tab INTO s_tab."表头数据装换
    ASSIGN COMPONENT s_tab-fieldname OF STRUCTURE <dyn_wa> TO <dyn_field>.
    IF sy-subrc = .
      <dyn_field> = s_tab-value.
      IF s_tab-fieldname = 'KLIMK'.
        lv_int = s_tab-value.
        gs_zsds003-klimk = lv_int.
      ENDIF.
    ENDIF.
  ENDLOOP.

  REFRESH:t_tab."清空表头

  CASE lv_func.

    WHEN 'CREDIT02'.

      IF gs_zsds003-ctlpc IS INITIAL.
        gs_zsds003-ctlpc = 'Z01'.
      ENDIF.
      CONCATENATE 'Z' gs_zsds003-kkber INTO gs_zsds003-kkber.
      CONDENSE gs_zsds003-kkber NO-GAPS.
      IF gs_zsds003-waers IS INITIAL.
        gs_zsds003-waers = 'CNY'.
      ENDIF.
      CALL FUNCTION 'CONVERSION_EXIT_ALPHA_INPUT'
        EXPORTING
          input  = gs_zsds003-kunnr
        IMPORTING
          output = gs_zsds003-kunnr.

      SELECT SINGLE * INTO CORRESPONDING FIELDS OF gs_knkk
         FROM knkk WHERE kunnr = gs_zsds003-kunnr AND kkber = gs_zsds003-kkber.
      IF sy-subrc = .
        gv_upd = 'U'.
      ELSE.
        gv_upd = 'I'.
      ENDIF.

      SELECT SINGLE * INTO CORRESPONDING FIELDS OF gs_knka
        FROM knka WHERE kunnr = gs_zsds003-kunnr.

      gs_knkk-kunnr = gs_zsds003-kunnr.
      gs_knkk-knkli = gs_zsds003-kunnr.
      gs_knkk-kkber = gs_zsds003-kkber.
      gs_knkk-klimk = gs_zsds003-klimk.
      gs_knkk-erdat = sy-uname.
      gs_knkk-ctlpc = gs_zsds003-ctlpc.

      CALL FUNCTION 'CREDITLIMIT_CHANGE'
        EXPORTING
          i_knka   = gs_knka
          i_knkk   = gs_knkk
          upd_knka = ''
          upd_knkk = gv_upd
*         XNEUA    = ' '
*         XREFL    = ' '
          yknka    = gv_knka
          yknkk    = gv_knkk.
      IF sy-subrc = .
        mesgadd:'RETURN' 'S',
                'MESSAGE' '信贷更新成功！'.
      ELSE.
        mesgadd:'RETURN' 'E',
                'MESSAGE' '信贷更新失败！'.
      ENDIF.

       WHEN OTHERS.
  ENDCASE.

ENDFUNCTION.

结构，自己参考那几个表就晓得了。。。主要说的是这个函数的用法