Hello Fractal
I recommend to use the same approach as SAP standard uses for creating change documents. In order to do so you need to define two additional itab having a change indicator as shown below:
TYPES: BEGIN OF ty_s_itab_di.
INCLUDE TYPE struc_a.
TYPES: CHIND TYPE bu_chind.
TYPES: END OF ty_s_itab_di.
TYPES: ty_t_itab_di TYPE STANDARD TABLE OF ty_s_itab_di
WITH DEFAULT KEY.
DATA:
gt_itab_old TYPE ty_t_itab_di,
gt_itab_new TYPE ty_t_itab_di.
*
*
- CHECK_INDICATOR = ' '
- TABLE_NEW = gt_Itab_new
- TABLE_OLD = gt_itab_old
The function module will remove identical lines from both itabs. New entries in gt_itab_New will have CHIND = 'I' and deleted entries in gt_itab_old will have CHIND = 'D'. If there is a delta between entries having the same keys then CHIND = 'U' (update).
Here is an extract of the function module's documentation for the TABLES parameter:
Table contains the changed data
The table structure must begin with the structure specified under
TABLENAME and an additional processing flag (TYPE C, length 1).
The table must be passed sorted by key.
During compression, identical lines in TABLE_OLD and TABLE_NEW are
deleted and the processing flag set. The following cases are
distinguished:
o Lines which exist with table key in TABLE_NEW, but not in TABLE_OLD:
Processing flag = "I" for INSERT.
o Lines which exist with table key in TABLE_NEW and in TABLE_OLD, the
contents of the TABLENAME structure fields in TABLE_NEW is not the
same as in TABLE_OLD: Processing flag = "U" for UPDATE.
o Lines which exist with table key in TABLE_NEW and in TABLE_OLD, the
contents of the TABLENAME structure fields in TABLE_NEW is the same
as in TABLE_OLD: Delete the line in TABLE_NEW, Delete the line in
TABLE_OLD.
Regards
Uwe
Bluesky
