Enhancement point in billing doc creation at invoice number generation

Question

I need to find an enhancement during billing document creation.
This is my requirement.      Within function module RV_INVOICE_DOCUMENT_ADD, standard SAP determines the invoice number using Function Module NUMBER_GET_NEXT.  now, there is an enhancement point available immediately after the standard SAP invoice number has been determined.
I need to find that enhancement point.
Please advice what enhancement points are available at this point.
Any advice is appreciated. Thanks in advance..

Answer 1

Hi
Here is a little program that when you type in the t-code it will give you all the user exits available.
<Code>
*& Report Z_FIND_USER_EXIT *&
REPORT z_find_user_exit NO STANDARD PAGE HEADING.
TABLES : tstc, tadir, modsapt, modact, trdir, tfdir, enlfdir.
TABLES : tstct.
DATA : jtab LIKE tadir OCCURS 0 WITH HEADER LINE.
DATA : field1(30).
DATA : v_devclass LIKE tadir-devclass.
SELECTION-SCREEN BEGIN OF LINE.
SELECTION-SCREEN COMMENT 1(30) text-001.
PARAMETERS : p_tcode LIKE tstc-tcode OBLIGATORY.
SELECTION-SCREEN END OF LINE.
SELECT SINGLE * FROM tstc WHERE tcode EQ p_tcode.
IF sy-subrc EQ 0.
  SELECT SINGLE * FROM tadir WHERE pgmid = 'R3TR' AND object = 'PROG' AND obj_name = tstc-pgmna.
  MOVE : tadir-devclass TO v_devclass.
  IF sy-subrc NE 0.
    SELECT SINGLE * FROM trdir WHERE name = tstc-pgmna.
    IF trdir-subc EQ 'F'.
      SELECT SINGLE * FROM tfdir WHERE pname = tstc-pgmna.
      SELECT SINGLE * FROM enlfdir WHERE funcname = tfdir-funcname.
      SELECT SINGLE * FROM tadir WHERE pgmid = 'R3TR'
                      AND object = 'FUGR'
                      AND obj_name EQ enlfdir-area.
      MOVE : tadir-devclass TO v_devclass.
    ENDIF.
  ENDIF.
  SELECT * FROM tadir INTO TABLE jtab WHERE pgmid = 'R3TR'
                      AND object = 'SMOD'
                      AND devclass = v_devclass.
  SELECT SINGLE * FROM tstct WHERE sprsl EQ sy-langu
    AND tcode EQ p_tcode.
  FORMAT COLOR COL_POSITIVE INTENSIFIED OFF.
  WRITE:/(19) 'Transactie Code - ', 20(20) p_tcode, 45(50) tstct-ttext.
  SKIP.
  IF NOT jtab[] IS INITIAL.
    WRITE:/(95) sy-uline.
    FORMAT COLOR COL_HEADING INTENSIFIED ON.
    WRITE:/1 sy-vline, 2 'User exit', 21 sy-vline , 22 'Omschrijving', 95 sy-vline.
    WRITE:/(95) sy-uline.
    LOOP AT jtab.
      SELECT SINGLE * FROM modsapt WHERE sprsl = sy-langu
        AND name = jtab-obj_name.
      FORMAT COLOR COL_NORMAL INTENSIFIED OFF.
      WRITE:/1 sy-vline, 2 jtab-obj_name HOTSPOT ON, 21 sy-vline , 22 modsapt-modtext, 95 sy-vline.
    ENDLOOP.
    WRITE:/(95) sy-uline.
    DESCRIBE TABLE jtab.
    SKIP.
    FORMAT COLOR COL_TOTAL INTENSIFIED ON.
    WRITE:/ 'Aantal gevonden user-exits:' , sy-tfill.
  ELSE.
    FORMAT COLOR COL_NEGATIVE INTENSIFIED ON.
    WRITE:/(95) 'No user-exit Found'.
  ENDIF.
ELSE.
  FORMAT COLOR COL_NEGATIVE INTENSIFIED ON.
  WRITE:/(95) 'Transactie code bestaat'.
ENDIF.
AT LINE-SELECTION.
  GET CURSOR FIELD field1.
  CHECK field1(4) EQ 'JTAB'.
  SET PARAMETER ID 'MON' FIELD sy-lisel+1(10).
  CALL TRANSACTION 'SMOD' AND SKIP FIRST SCREEN.
<Code>
Hope it helps.
Regards
Vic