SAP 查找User更改历史记录
对前台业务的修改，系统都会保存更改的用户，更改时间，更改的位置（数据源），更改的内容（新值和旧值）。当然对于PO之类的也可以看Changes ，对于系统没有提供Changes的地方，我们可以用下面的方法查找
1. 通过TABLE:
CDHDR
更改凭证抬头
CDPOS
更改凭证项目
2. 通过FUNCTION:
CHANGEDOCUMENT_READ_HEADERS
取得更改凭证抬头
CHANGEDOCUMENT_READ_POSITIONS
取得更改凭证项目
如果不用OBJECTCLASS，查找过程会相当缓慢，下面是常用的OBJECTCLASS。不过有些OBJECTCLASS会对应多个T-code，另外那两个Table里显示的T-Code有时候不是我们操作的真正的T-Code
- ADRESSE - xk01
- ADRESSE3 - su01
- BANF - me54n
- BELEG - vf21
- BETRIEB - vd02
- COND_A - me31k
- DEBI - xd02
- EINKBELEG - me22n
- ENTRYSHEET - ml85
- FEATURE - ct04
- INCOMINGINVOICE - mrbr
- INFOSATZ - me13
- KLASSE - cl02
- KRED - xk02，XK01
- LIEFERUNG - vl03n
- MATERIAL - mm01
- MM_SERVICE - me22n
- MRP_AREA - mm01
- NRINTERVAL - omh6
- PFCG - pfcg
- REVISION - me32k
- SACH - fs00
- SPEC_TMP - ml10
- STLV - ml02
- VASMD - ac03
- VERKBELEG - va02
显示修改数据（tables CDHDR and CDPOS）
REPORT z_alv_cdhdr_cdpos.TYPE-POOLS slis.
DATA : cdhdr TYPE cdhdr.
SELECT-OPTIONS :
s_objcls FOR cdhdr-objectclas OBLIGATORY,
s_objtid FOR cdhdr-objectid,
s_chngnr FOR cdhdr-changenr,
s_usrnam FOR cdhdr-username DEFAULT sy-uname,
s_udate FOR cdhdr-udate DEFAULT sy-datum,
s_time FOR cdhdr-utime,
s_tcode FOR cdhdr-tcode,
s_plncnr FOR cdhdr-planchngnr,
s_chngno FOR cdhdr-act_chngno,
s_wsplnd FOR cdhdr-was_plannd,
s_chngid FOR cdhdr-change_ind.
SELECTION-SCREEN SKIP.
PARAMETERS p_max TYPE numc3 OBLIGATORY DEFAULT '200'.
*---------------------------------------------------------------------*
TYPES :
BEGIN OF ty_s_cdhdr.
INCLUDE STRUCTURE cdhdr.
TYPES : checkbox,
END OF ty_s_cdhdr,
BEGIN OF ty_s_cdpos.
INCLUDE STRUCTURE cdpos.
TYPES : checkbox,
END OF ty_s_cdpos.
*---------------------------------------------------------------------*
DATA :
* Layout for ALV
gs_layout TYPE slis_layout_alv,
* Change document header
t_cdhdr TYPE TABLE OF ty_s_cdhdr.
*---------------------------------------------------------------------*
START-OF-SELECTION.
* Read Change document header
SELECT * INTO TABLE t_cdhdr
UP TO p_max ROWS
FROM cdhdr
WHERE objectclas IN s_objcls
and objectid in s_objtid
and changenr in s_chngnr
AND username IN s_usrnam
AND udate IN s_udate
AND utime IN s_time
AND tcode IN s_tcode
AND planchngnr IN s_plncnr
AND act_chngno IN s_chngno
AND was_plannd IN s_wsplnd
AND change_ind IN s_chngid.
gs_layout-zebra = 'X'.
gs_layout-colwidth_optimize = 'X'.
gs_layout-box_fieldname = 'CHECKBOX'.
* Display ALV
CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
EXPORTING
i_callback_program = sy-cprog
i_callback_user_command = 'USER_COMMAND'
i_structure_name = 'CDHDR'
is_layout = gs_layout
TABLES
t_outtab = t_cdhdr.
*---------------------------------------------------------------------*
* FORM USER_COMMAND *
*---------------------------------------------------------------------*
FORM user_command USING u_ucomm TYPE syucomm
us_selfield TYPE slis_selfield. "#EC CALLED
* Macro definition
DEFINE m_sort.
add 1 to ls_sort-spos.
ls_sort-fieldname = &1.
ls_sort-up = 'X'.
append ls_sort to lt_sort.
END-OF-DEFINITION.
DATA :
ls_cdhdr TYPE ty_s_cdhdr,
ls_sort TYPE slis_sortinfo_alv,
lt_sort TYPE slis_t_sortinfo_alv,
* Change document items
lt_cdpos TYPE TABLE OF ty_s_cdpos.
CASE u_ucomm.
WHEN '&IC1'.
PERFORM check_marked USING us_selfield.
* Read Change document items
LOOP AT t_cdhdr INTO ls_cdhdr WHERE checkbox = 'X'.
SELECT * APPENDING TABLE lt_cdpos
FROM cdpos
WHERE objectclas = ls_cdhdr-objectclas
AND objectid = ls_cdhdr-objectid
AND changenr = ls_cdhdr-changenr.
ENDLOOP.
m_sort 'CHANGENR'.
* Display ALV
CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
EXPORTING
i_structure_name = 'CDPOS'
is_layout = gs_layout
it_sort = lt_sort
TABLES
t_outtab = lt_cdpos.
ENDCASE.
ENDFORM. " USER_COMMAND
*---------------------------------------------------------------------*
* Form CHECK_MARKED
*---------------------------------------------------------------------*
* What has been marked in t_cdhdr
*---------------------------------------------------------------------*
FORM check_marked USING us_selfield TYPE slis_selfield.
FIELD-SYMBOLS :
<cdhdr> TYPE ty_s_cdhdr.
READ TABLE t_cdhdr TRANSPORTING NO FIELDS WITH KEY checkbox = 'X'.
IF NOT sy-subrc IS INITIAL AND
NOT us_selfield-tabindex IS INITIAL.
READ TABLE t_cdhdr INDEX us_selfield-tabindex ASSIGNING <cdhdr>.
<cdhdr>-checkbox = 'X'.
ENDIF.
