Problem During Extraction

Question

Hello All,
I tried enhancing the 0customer_Attr  datasource through user exit EXIT_SAPLRSAP_002.
I had entered 4 fields and tried to fill the data to these fields by writing the abap code.
But after in bw the values of the fields which i have entered are not comming.
The following is the code i have written:
For data source "0customer_attr" only.
*&  Include           ZXRSAU02                                         *
CASE i_datasource.
  WHEN '0MATERIAL_ATTR'.
    PERFORM 0material(saplxrsa) TABLES i_t_data IF FOUND.
  WHEN '0CUSTOMER_ATTR'.
   DATA: ZZCUST_GRP LIKE KNVV-KDGRP,
         ZZPAYER LIKE KNVP-KUNN2,
         ZZCC_AREA LIKE KNKK-KKBER,
         ZZPIND_CODE2 LIKE KNA1-BRAN2.
TABLES:BIW_KNA1_S,KNVP,KNKK,KNA1.
DATA: L_BIW_KNA1_S type BIW_KNA1_S.
**<< SELECTION OF PAYER>>
LOOP AT I_T_DATA INTO L_BIW_KNA1_S.
SELECT * FROM KNVP
WHERE KUNNR = L_BIW_KNA1_S-kunnr.
IF SY-SUBRC EQ 0.
L_BIW_KNA1_S-ZZPAYER = KNVP-KUNN2.
ELSE.
L_BIW_KNA1_S-ZZPAYER = KNVP-KUNNR.
ENDIF.
ENDSELECT.
**<<SELECTION OF PAYERS CREDIT CONTROL AREA>>
SELECT * FROM KNKK
UP TO 1 ROWS
WHERE KUNNR = L_BIW_KNA1_S-ZZPAYER.
IF SY-SUBRC eq 0.
L_BIW_KNA1_S-ZZCC_AREA = KNKK-KKBER.
ENDIF.
ENDSELECT.
*<<SELECTION OF PAYERS INDUSTRY CODE>>
SELECT * FROM KNA1
WHERE KUNNR = L_BIW_KNA1_S-ZZPAYER.
IF SY-SUBRC EQ 0.
L_BIW_KNA1_S-ZZPIND_CODE2 = KNA1-BRAN2.
ENDIF.
ENDSELECT.
*<<SELECTION OF PAYERS GROUP>>
SELECT * FROM KNVV
WHERE KUNNR = L_BIW_KNA1_S-ZZPAYER.
IF SY-SUBRC EQ 0.
L_BIW_KNA1_S-ZZCUST_GRP = KNVV-KDGRP.
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    INPUT         = ZZCUST_GRP
IMPORTING
   OUTPUT        = ZZCUST_GRP
ENDIF.
ENDSELECT.
MODIFY I_T_DATA FROM L_BIW_KNA1_S.
clear L_BIW_KNA1_S.
ENDLOOP.
ENDCASE.
Please check if there is some problem in the code.

Answer 1

Are you sure that the flag "Field only Know in customer EXIT" in RSA6 are not checked for the field you have added to the datasource?
Hi
Mario