Custom FM for dunning activity

Question

Dear All,
I want to post a document in customer account after dunning activity. I am trying to do this through ABAP. What i did was that i made a copy of the standard dunning activity FM Z_ISU_DUNNING_EMPTY_ACTIVI_0350. In this FM i added my code which would post a simple document in a customer account.
When i test this function module using se37 the FM works perfectly well and posts a document. However when i put this FM for my dunning activity(Using SPRO>> Configure Dunning activities) and run the dunning proposal and activity, the document does not get posted. I dont know why. Can anyone please help. Would really appreciate
Here is how the code looks like after i added my code for posting a simple document
FUNCTION ZISU_DUNNING_EMPTY_ACTIVI_0350.
""Local Interface:
*"  IMPORTING
*"     VALUE(I_TFK047L) LIKE  TFK047L STRUCTURE  TFK047L
*"  TABLES
*"      T_FKKMAZE STRUCTURE  FKKMAZE
*"      T_FKKMAKT STRUCTURE  FKKMAKT
*"      T_FKKOP STRUCTURE  FKKOP
*"      T_FKKOPK STRUCTURE  FKKOPK
*"      T_FIMSG STRUCTURE  FIMSG
*"  CHANGING
*"     VALUE(C_FKKMAKO) LIKE  FKKMAKO STRUCTURE  FKKMAKO
*"     VALUE(C_FKKKO) LIKE  FKKKO STRUCTURE  FKKKO
only write success message into job log
  DATA:
    documentheader like bapidfkkko,
partnerpositions type standard table of bapidfkkop with header line,
genledgerpositions type standard table of bapidfkkopk with header line,
documentnumber like bapidfkkko-doc_no,
return type standard table of bapiret2 with header line.
  documentheader-fikey                = '100915-001'.
  documentheader-appl_area            = 'R'.
  documentheader-doc_type             = 'AB'.
  documentheader-doc_source_key       = '01'.
  documentheader-currency             = 'UNI'.
  documentheader-doc_date             =  sy-datum.
  documentheader-post_date            =  sy-datum.
  partnerpositions-item                = '0001'.
  partnerpositions-comp_code           = 'UNI'.
  partnerpositions-buspartner          = '0000014044'.
  partnerpositions-cont_acct           = '10000416133X'.
  partnerpositions-main_trans          = '6000'.
  partnerpositions-sub_trans           = 'AD01'.
  partnerpositions-g_l_acct            = '0000140000'.
  partnerpositions-doc_date            = sy-datum.
  partnerpositions-post_date           = sy-datum.
  partnerpositions-net_date            = sy-datum.
  partnerpositions-currency            = 'UNI'.
  partnerpositions-amount              = '99'.
  APPEND partnerpositions.
  genledgerpositions-item = '0001'.
  genledgerpositions-comp_code = 'UNI'.
  genledgerpositions-g_l_acct  = '0000299000'.
  genledgerpositions-amount = '-99'.
  genledgerpositions-profit_ctr = 'IBC'.
   APPEND genledgerpositions.
    CALL FUNCTION 'BAPI_CTRACDOCUMENT_CREATE'
    EXPORTING
      testrun            = ''
      documentheader     = documentheader
    IMPORTING
      documentnumber     = documentnumber
      return             = return
    TABLES
      partnerpositions   = partnerpositions
      genledgerpositions = genledgerpositions.
CALL FUNCTION 'BAPI_TRANSACTION_COMMIT'
      EXPORTING
        wait = 'X'.
    CALL FUNCTION 'FKK_DUNNING_MESSAGE_APPEND'
         EXPORTING
              MSGID   = 'EK'
              MSGNO   = '345'
              MSGPR   = '2'
         TABLES
              T_FIMSG = T_FIMSG.
    IF 1 = 0. MESSAGE S345(EK). ENDIF.
ENDFUNCTION.

Answer 1

The log displays the same message as the one it showed when i had not changed the code.
I also tried to do the same thing with the dunning activity that deactivates the installment plan. i made a copy of the function module ISU_DUNNING_DEACT_INSTPL_0350. In that new func module i copied my code that posts a simple document. then i assigned the new ZISU_DUNNING_DEACT_INSTPL_0350 activity to the dunning procedure in SPRO. I created an installment plan for a business partner and ran the dunning activity. The installment got de activated but no document was posted!
for your help i am providing the code of the ZISU_DUNNING_DEACT_INSTPL_0350
FUNCTION ZISU_DUNNING_DEACT_INSTPL_0350.
""Local Interface:
*"  IMPORTING
*"     VALUE(I_TFK047L) LIKE  TFK047L STRUCTURE  TFK047L
*"  EXPORTING
*"     VALUE(TEMP) TYPE  OPTXT
*"  TABLES
*"      T_FKKMAZE STRUCTURE  FKKMAZE
*"      T_FKKMAKT STRUCTURE  FKKMAKT
*"      T_FKKOP STRUCTURE  FKKOP
*"      T_FKKOPK STRUCTURE  FKKOPK
*"      T_FIMSG STRUCTURE  FIMSG
*"  CHANGING
*"     VALUE(C_FKKMAKO) LIKE  FKKMAKO STRUCTURE  FKKMAKO
*"     VALUE(C_FKKKO) LIKE  FKKKO STRUCTURE  FKKKO
DATA: BEGIN OF T_OPBEL OCCURS 1,
          OPBEL LIKE FKKOP-OPBEL,
        END OF T_OPBEL.
  DATA: H_ATEXT(100).
  DATA: OPBEL_C(12).
  DATA: H_UPDATE.
  DATA: H_FKKMAHNV LIKE FKKMAHNV.
  DATA: H_TFK033D LIKE TFK033D.
  DATA: H_DEAGD LIKE RFKN1-DEAGD,
documentheader like bapidfkkko,
partnerpositions type standard table of bapidfkkop with header line,
genledgerpositions type standard table of bapidfkkopk with header line,
documentnumber like bapidfkkko-doc_no,
return type standard table of bapiret2 with header line.
documentheader-fikey                = '100915-001'.
documentheader-appl_area            = 'R'.
documentheader-doc_type             = 'AB'.
documentheader-doc_source_key       = '01'.
documentheader-currency             = 'UNI'.
documentheader-doc_date             =  sy-datum.
documentheader-post_date            =  sy-datum.
partnerpositions-item                = '0001'.
partnerpositions-comp_code           = 'UNI'.
partnerpositions-buspartner          = '0000014030'.
partnerpositions-cont_acct           = '10000416119X'.
partnerpositions-main_trans          = '6000'.
partnerpositions-sub_trans           = 'AD01'.
partnerpositions-g_l_acct            = '0000140000'.
partnerpositions-doc_date            = sy-datum.
partnerpositions-post_date           = sy-datum.
partnerpositions-net_date            = sy-datum.
partnerpositions-currency            = 'UNI'.
partnerpositions-amount              = '66'.
APPEND partnerpositions.
genledgerpositions-item = '0001'.
genledgerpositions-comp_code = 'UNI'.
genledgerpositions-g_l_acct  = '0000299000'.
genledgerpositions-amount = '-66'.
genledgerpositions-profit_ctr = 'IBC'.
APPEND genledgerpositions.
CALL FUNCTION 'BAPI_CTRACDOCUMENT_CREATE'
EXPORTING
testrun            = ''
documentheader     = documentheader
IMPORTING
documentnumber     = documentnumber
return             = return
TABLES
partnerpositions   = partnerpositions
genledgerpositions = genledgerpositions.
CALL FUNCTION 'BAPI_TRANSACTION_COMMIT'
EXPORTING
wait = 'X'.
temp = return-message.
temp = documentnumber.
  CALL FUNCTION 'ISU_DUNNING_DEACT_INSTPL_LOAN'
       EXPORTING
            I_LOAN    = space
       TABLES
            T_FKKMAZE = T_FKKMAZE
            T_FKKMAKT = T_FKKMAKT
            T_FIMSG   = T_FIMSG
       CHANGING
            C_FKKMAKO = C_FKKMAKO.
  exit.
get update flag from global memory
Parameter, ob Testdruck vorgesehen ist, aus dem globalen Memory holen
  CALL FUNCTION 'FKK_DUNNING_PARAMETER_GET'
       IMPORTING
            E_UPDATE   = H_UPDATE
            E_FKKMAHNV = H_FKKMAHNV.
new: reason for deactivation of installment plan in
business area 1102
  CALL FUNCTION 'FKK_ACCOUNT_DETERMINE_1102'
       EXPORTING
            I_APPLK   = H_FKKMAHNV-APPLK
       IMPORTING
            E_TFK033D = H_TFK033D
       EXCEPTIONS
            OTHERS    = 3.
  IF SY-SUBRC <> 0.
    MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
            WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
  ENDIF.
  H_DEAGD = H_TFK033D-FUN01.
inside the dunned items, look if there installments in the highest
dunning level
innerhalb der gemahnten Forderungen nach Raten suchen, die die
höchste Mahnstufe erreicht haben
  LOOP AT T_FKKMAZE
    WHERE STAKZ = 'R'
    and xinfo   = ' '.
     AND MAHNS = C_FKKMAKO-MAHNS.                  "Note 182489
    READ TABLE T_OPBEL WITH KEY OPBEL = T_FKKMAZE-OPBEL.
if the document number is new, go on
Nur weitermachen, wenn die Nummer noch nicht geprüft wurde
    CHECK SY-SUBRC NE 0.
    T_OPBEL-OPBEL = T_FKKMAZE-OPBEL.
    APPEND T_OPBEL.
    WRITE T_OPBEL-OPBEL TO OPBEL_C NO-ZERO.
deactivate installment plan only in update mode
Ratenplan nur im UPDATE-Modus deaktivieren
    IF H_UPDATE = 'X'.
      CALL FUNCTION 'FKK_S_INSTPLAN_DEACTIVATE'
           EXPORTING
                I_OPBEL = T_OPBEL-OPBEL
                I_DEAGD = H_DEAGD
                I_DEADT = sy-datum
           EXCEPTIONS
                OTHERS  = 1.
    else.
      clear sy-subrc.
    ENDIF.
    IF SY-SUBRC = 0.
success message in job log
Nachricht, daß Ratenplan deaktiviert wurde, ins Protokoll  :News that installment plan has been disabled, the log
      CALL FUNCTION 'FKK_DUNNING_MESSAGE_APPEND'
           EXPORTING
                MSGID   = 'EK'
                MSGNO   = '304'
                MSGV1   = OPBEL_C
                MSGPR   = '2'
           TABLES
                T_FIMSG = t_fimsg.
      IF 1 = 0. MESSAGE S304(EK) with OPBEL_C. ENDIF.
Create an entry in dunning history for deactivating an installmt plan
Für das Deaktivieren des Ratenplans wird noch eine Mahnaktivität
definiert.
      CLEAR T_FKKMAKT.
      MOVE-CORRESPONDING C_FKKMAKO TO T_FKKMAKT.
      H_ATEXT = 'Ratenplan & wurde deaktiviert'(001).
      REPLACE '&' WITH OPBEL_C INTO H_ATEXT.
      CONDENSE H_ATEXT.
      T_FKKMAKT-ATEXT = H_ATEXT.
    concatenate 'Ratenplan'(001)
                t_opbel-opbel
                'wurde deaktiviert'(002)
      into t_fkkmakt-atext separated by space.
      APPEND T_FKKMAKT.
    ELSE.
Write error in job log
Fehlermeldung aus dem Funktionsbaustein wird in Tabelle geschrieben,
sie kommt dann nach der Abbruch-Meldung ins Protokoll.
      CALL FUNCTION 'FKK_DUNNING_SYST_MESSAGE_APP'
           TABLES
                T_FIMSG = T_FIMSG.
error message in case of error
Dann wird die Abbruchmeldung direkt ausgegeben
      MESSAGE E305(EK) WITH OPBEL_C.
    ENDIF.
  ENDLOOP.
ENDFUNCTION.