RFC passing table data

Hi, all.

To get another system data, I write a RFC function.

I have to receive 2 tables result. However, the RFC function call just sends me only first table result, second table is emtpy.

i will show you the program. Please, tell me what's wrong in the RFC function call.

*----

CALL FUNCTION 'Z_RFC_ACC_DOC_INTERFACE1'

DESTINATION 'DEVCLNT400'

EXPORTING

f_date = s_budat-low

t_date = s_budat-high

f_hkont = p_hkont

TABLES

t_bseg = it_bseg <b>=> this table is emtpy after finishing RFC</b>.

t_bkpf = it_bkpf. <b>=> this table has data after finishing RFC</b>

*----

FUNCTION Z_RFC_ACC_DOC_INTERFACE1.

DATA: it_bkpf LIKE bkpf OCCURS 0,

it_bseg LIKE bseg OCCURS 0.

DATA: wa_bkpf TYPE bkpf,

wa_bseg TYPE bseg.

DATA: it_ztifec03 TYPE ztifec03 OCCURS 0,

wa_ztifec03 TYPE ztifec03.

• STEP 1. ----------------------------------------------

• to select ztifec03

SELECT SINGLE * FROM ztifec03

INTO CORRESPONDING FIELDS OF wa_ztifec03

WHERE old_hkont EQ f_hkont.

• STEP 2. ----------------------------------------------

• to select bkpf in midas

SELECT * INTO TABLE it_bkpf

FROM bkpf

WHERE bukrs EQ 'OZ01'

AND gjahr EQ f_date(4)

AND budat BETWEEN f_date AND t_date

AND blart IN ('MD', 'MB', 'MC', 'ZZ', 'MA').

CHECK it_bkpf[] IS NOT INITIAL.

• to select bseg

SELECT * INTO TABLE it_bseg

FROM bseg

FOR ALL ENTRIES IN it_bkpf

WHERE bukrs EQ 'OZ01'

AND gjahr EQ f_date(4)

AND belnr EQ it_bkpf-belnr

AND hkont EQ wa_ztifec03-hkont.

• STEP 3. -----------------------------------------------

LOOP AT it_bkpf INTO wa_bkpf.

MOVE-CORRESPONDING wa_bkpf TO t_bkpf.

APPEND t_bkpf.

ENDLOOP.

LOOP AT it_bseg INTO wa_bseg.

MOVE-CORRESPONDING wa_bseg TO t_bseg.

APPEND t_bseg.

ENDLOOP.

ENDFUNCTION.