Updating CDHDR table

Question

Hi All,
I have a Z table  of which I change the primary key values though a Z program. The object id field in CDHDR table is a combination of the key fields in my Z table. I have made some changes to the values of these key fields in this Z table.But I dont see the same reflected in CDHDR. I have created change document for Z table through SCDO transaction and generated a function module too. But I am not sure where to insert this function module and how to go further so that I can find the value in CDHDR.
Please assist.
Thanks.
Vineeta

Answer 1

The following function module is used to extract values from the CDHDR table.
*             Form  GET_CHANGEDOCUMENT_HEADER
*              Description :
*                            Get Change Document Header data
*             -->P_I_T_CDHDR       Change Document Header
*             -->P_I_S_VBAK_VBELN  Order
form get_changedocument.
* Get Change Document Header data
  clear g_objectclass.
  g_objectclass = c_verkbeleg.          " OBJECT CLASS: 'VERKBELEG'
  g_objectid    = is_vbak_vbap-vbeln.   " OBJECTID    : current Sales Order
  call function 'CHANGEDOCUMENT_READ'
    exporting
      objectclass                = g_objectclass
      objectid                   = g_objectid
    tables
      editpos                    = i_cdpos
    exceptions
      no_position_found          = 1
      wrong_access_to_archive    = 2
      time_zone_conversion_error = 3
      others                     = 4.
* If records are returned from CDHDR
  if sy-subrc eq 0.
* Sort by latest change number
    sort i_cdpos by changenr descending.
  endif.
endform.                    " GET_CHANGEDOCUMENT_HEADER
But I really don't think that the table registers changes done to any Z object. Try this anyways.
Reward if useful,
Thanks,
Rahul