Help with Update task

Question

Hi friends,
In the below am trying to update a custom table using a call function in update task. I dont see the table getting updated can someone take a look at it and let me knw what the problem is? I have the commit work statement and also marked the function module as an update one in the attribute. Please help me . Thanks in advance! kathy
*&  Include           ZINBOUND_TEST
Report: ZINBOUND_TEST.
DATA: l_dest     TYPE REF TO if_bgrfc_destination_inbound,
      l_unit     TYPE REF TO if_trfc_unit_inbound,
      l_inb_dest TYPE bgrfc_main_i_dst,
      lv_matid TYPE /sapapo/matid,
      lv_matnr TYPE /sapapo/matnr,
      lv_maktx type /SAPAPO/MAKTX,
      lv_langu  TYPE LANGU.
data: lt_product type  STANDARD TABLE OF ZUPDATE,
      ls_product type ZUPDATE.
lv_matid = '123'.
lv_langu = 'E'.
lv_maktx = 'Materia1'.
CALL FUNCTION 'Z_TEST' IN UPDATE TASK
  EXPORTING
    iv_matid = lv_matid
    iv_maktx = lv_maktx
    iv_langu = lv_langu .
COMMIT WORK.
select * from zupdate into corresponding fields OF TABLE lt_product.
if sy-subrc <> 0.
  write 'no records added'.
else.
  loop at lt_product into ls_product.
    write: / ls_product-MATID,
             ls_product-MAKTX.
  endloop.
endif.
FUNCTION Z_TEST.
*"*"Update Function Module:
*"*"Local Interface:
*"  IMPORTING
*"     VALUE(IV_MATID) TYPE  /SAPAPO/MATID
*"     VALUE(IV_MAKTX) TYPE  /SAPAPO/MAKTX
*"     VALUE(IV_LANGU) TYPE  LANGU
data: itab type standard table of zupdate,
wa_itab type zupdate.
wa_itab-matid = iv_matid.
wa_itab-maktx = iv_maktx.
wa_itab-langu = iv_langu.
append wa_itab to itab.
update zupdate from table itab .
ENDFUNCTION.
Edited by: ka reddy on Sep 24, 2009 4:14 PM
Edited by: ka reddy on Sep 24, 2009 4:15 PM
Edited by: ka reddy on Sep 24, 2009 4:16 PM
Edited by: ka reddy on Sep 24, 2009 4:17 PM
Edited by: ka reddy on Sep 24, 2009 4:21 PM

Answer 1

Hey Naimesh thanks for the reply. yeah i read that document way before and i started taking a stab at implementing it.
I started with update task to see how it behaves and then wanted to go with BGRFC tats when i had the update issue.
Now that am done with update i want to implement BGRFC.
I have modified the earlier prgm...Can you give me some ideas how to extend this? Thanks!
*&  Include           ZBGRFC_INBOUND_TEST
Report: ZBGRFC_INBOUND_TEST.
DATA: l_dest     TYPE REF TO if_bgrfc_destination_inbound,
      l_unit     TYPE REF TO if_trfc_unit_inbound,
      l_inb_dest TYPE bgrfc_main_i_dst,
      lv_matid TYPE /sapapo/matid,
      lv_matnr TYPE /sapapo/matnr,
      lv_maktx type /SAPAPO/MAKTX,
      lv_matid1 TYPE /sapapo/matid,
      lv_matnr1 TYPE /sapapo/matnr,
      lv_maktx1 type /SAPAPO/MAKTX,
      lv_langu1  TYPE LANGU,
      lv_langu  TYPE LANGU.
data: lt_product type  STANDARD TABLE OF ZUPDATE,
      ls_product type ZUPDATE.
lv_matid = '125'.
lv_langu = 'E'.
lv_maktx = 'Materia3'.
**--Get the inbound destination for BGRFC.
  IF l_inb_dest IS INITIAL.
      SELECT SINGLE * FROM bgrfc_main_i_dst INTO l_inb_dest.
    ENDIF.
    l_dest = cl_bgrfc_destination_inbound=>create( l_inb_dest-destination ).
    l_unit = l_dest->create_trfc_unit( ).
CALL FUNCTION 'Z_TEST' IN BACKGROUND UNIT l_unit
  EXPORTING
    iv_matid = lv_matid
    iv_maktx = lv_maktx
    iv_langu = lv_langu .
select * from zupdate into corresponding fields OF TABLE lt_product.
if sy-subrc <> 0.
  write 'no records added'.
else.
  loop at lt_product into ls_product.
    write: / ls_product-MATID,
             ls_product-MAKTX.
  endloop.
endif.
Edited by: ka reddy on Sep 24, 2009 5:16 PM