Can i know the user exits which should trigger while saving billing docu

Question

hi,
please can u help me to find out user exits which should trigger while saving billing documents.

Answer 1

A couple years ago I downloaded this program, I think from SAPFANS.  I don't take any credit for it...Not sure who originally wrote it.  Just type in the t-code and hit execute. 
*& Report name          : Identify and Drill-Down to SAP User Exits.   *
*& Program name         : ZZ_FIND_USER_EXITS                           *
REPORT  ZZ_FIND_USER_EXITS
  NO STANDARD PAGE HEADING
  LINE-SIZE 132
  LINE-COUNT 65
  MESSAGE-ID MM.
D A T A   D E F I N I T I O N                                        *
TABLES : TSTC,      " SAP Transaction Codes
         TADIR,     " Directory of Repository Objects
         MODSAPT,   " SAP Enhancements - Short Texts
         MODACT,    " Modifications
         TRDIR,     " System Table TRDIR
         TFDIR,     " Function Module
         ENLFDIR,   " Additional Attributes for Function Modules
         TSTCT.     " Transaction Code Texts
S E L E C T I O N   S C R E E N                                      *
PARAMETERS : P_TCODE LIKE TSTC-TCODE OBLIGATORY.
I N T E R N A L   S T R U C T U R E S   &   T A B L E S              *
DATA : GT_TADIR LIKE TADIR OCCURS 0 WITH HEADER LINE.
V A R I A B L E S                                                    *
DATA :
       GV_FIELD1(30)  TYPE C,
       GV_DEVCLASS    LIKE TADIR-DEVCLASS.
C O N S T A N T S                                                    *
CONSTANTS:
           GC_F     LIKE TRDIR-SUBC   VALUE 'F',
           GC_R3TR  LIKE TADIR-PGMID  VALUE 'R3TR',
           GC_FUGR  LIKE TADIR-OBJECT VALUE 'FUGR',
           GC_SMOD  LIKE TADIR-OBJECT VALUE 'SMOD',
           GC_PROG  LIKE TADIR-OBJECT VALUE 'PROG'.
R A N G E S                                                          *
RANGES:
  GR_VKORK      FOR  WKBP-VKORG.
E V E N T   P R O C E S S I N G                                      *
INITIALIZATION.
AT SELECTION-SCREEN.
  SELECT SINGLE PGMNA
    INTO TSTC-PGMNA
    FROM TSTC
    WHERE TCODE = P_TCODE.
  IF SY-SUBRC <> 0.
    MESSAGE E899(MM)
      WITH TEXT-E01    " Input Transaction Code is Invalid.
           TEXT-E02.   " Please Correct !!
  ENDIF.
  SELECT SINGLE TTEXT
    INTO TSTCT-TTEXT
    FROM TSTCT
    WHERE SPRSL = SY-LANGU
      AND TCODE = P_TCODE.
START-OF-SELECTION.
  CLEAR GV_DEVCLASS.
  SELECT SINGLE DEVCLASS
    INTO GV_DEVCLASS
    FROM TADIR
    WHERE PGMID  = GC_R3TR
      AND OBJECT = GC_PROG
      AND OBJ_NAME = TSTC-PGMNA.
  IF SY-SUBRC <> 0.
    SELECT SINGLE SUBC
      INTO TRDIR-SUBC
      FROM TRDIR
      WHERE NAME = TSTC-PGMNA.
    IF TRDIR-SUBC = GC_F.         " Function Group
      SELECT SINGLE FUNCNAME
        INTO TFDIR-FUNCNAME
        FROM TFDIR
        WHERE PNAME = TSTC-PGMNA.
      SELECT SINGLE AREA
        INTO ENLFDIR-AREA
        FROM ENLFDIR
        WHERE FUNCNAME = TFDIR-FUNCNAME.
      CLEAR GV_DEVCLASS.
      SELECT SINGLE DEVCLASS
        INTO GV_DEVCLASS
        FROM TADIR
        WHERE PGMID    = GC_R3TR
          AND OBJECT   = GC_FUGR
          AND OBJ_NAME = ENLFDIR-AREA.
    ENDIF.
  ENDIF.
  SELECT *
    FROM TADIR
    INTO TABLE GT_TADIR
    WHERE PGMID  = GC_R3TR
      AND OBJECT = GC_SMOD
      AND DEVCLASS = GV_DEVCLASS.
  FORMAT COLOR COL_POSITIVE INTENSIFIED OFF.
  WRITE:/(19) 'Transaction Code - ',
          20(20) P_TCODE,
          45(36) TSTCT-TTEXT.
  SKIP.
  IF NOT GT_TADIR[] IS INITIAL.
    WRITE:/(95) SY-ULINE.
    FORMAT COLOR COL_HEADING INTENSIFIED ON.
    WRITE:/1 SY-VLINE,
           2 'Exit Name',
          21 SY-VLINE ,
          24 'Description',
          95 SY-VLINE.
    WRITE:/(95) SY-ULINE.
    SORT GT_TADIR BY OBJ_NAME.
    LOOP AT GT_TADIR.
      SELECT SINGLE MODTEXT
        INTO MODSAPT-MODTEXT
        FROM MODSAPT
        WHERE SPRSL = SY-LANGU
          AND NAME = GT_TADIR-OBJ_NAME.
      FORMAT COLOR COL_NORMAL INTENSIFIED OFF.
      WRITE:/01 SY-VLINE,
             02 GT_TADIR-OBJ_NAME HOTSPOT ON,
             21 SY-VLINE,
             22 MODSAPT-MODTEXT,
             95 SY-VLINE.
    ENDLOOP.
    WRITE:/(95) SY-ULINE.
    DESCRIBE TABLE GT_TADIR.
    SKIP.
    FORMAT COLOR COL_TOTAL INTENSIFIED ON.
    WRITE:/ 'No of Exits:' , SY-TFILL.
  ELSE.
    FORMAT COLOR COL_NEGATIVE INTENSIFIED ON.
    WRITE:/(95) 'No User Exit exists'.
  ENDIF.
AT LINE-SELECTION.
  GET CURSOR FIELD GV_FIELD1.
  IF GV_FIELD1(8) = 'GT_TADIR'.
    SET PARAMETER ID 'MON' FIELD SY-LISEL+1(10).
    CALL TRANSACTION 'SMOD' AND SKIP FIRST   SCREEN.
  ELSE.
    MESSAGE I899(MM)
      WITH TEXT-I01    " Click on the Exit Name to Drill-Down
           TEXT-I02.   " to SAP Enhancement Information.
  ENDIF.
END-OF-SELECTION.
TOP-OF-PAGE.
S U B R O U T I N E S                                                *
E N D   O F   R E P O R T  ****************************************