Problem in Logicpart for a BADI !! please help me

Question

hello all ,
Im writing small code in implementationpart of method for one BADI /SAPSLL/IFEX_SD0C_R3 .
In the following code Im getting the values into tl_ref2 from the structure present in the method which is having delivery number .
loop at tl_ref2 into wl_ref.
    move wl_ref-refno to wl_likp-vbeln.
    append wl_likp to tl_likp.
  endloop.
*C Finding the shipment number from the delivery number
  clear wl_likp.
  if not tl_likp is initial .
loop at tl_likp into wl_likp.
    select vbeln
            from
             vbfa
      into corresponding fields of table tl_vttk
     where vbelv = wl_likp-vbeln and vbtyp_n = '8'.
      endloop.
  endif .
Here for the delivery 80009852 the values exist in VBFA table . But I'm getting sy-subrc = 4 and the table tl_vttk is not filled .
I have tried all possible ways .i have changed the code into for all entries , declared same data types, but still sy-subrc = 4 even though the values exist in VBFA table .
Please tell me why tl_vttk table is not filled even though the value exist in VBFA table
regards
pavan

Answer 1

Hi Uma
Thanks for the reply . the conversion routine is already used in the logic . For VBTYP_N = '8', the values exist .
Please see the detailed code .
the value for VBELN exist in VBFA . but im gettng sy-subrc = 4 in the select statement
please see the code below
tl_ref1         =  cs_hdr_cdoc-ref.
  LOOP AT tl_ref1 INTO wl_ref WHERE objtp = c_objtp .
    CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'   " For deleting Leading zero's
      EXPORTING
        input  = wl_ref-refno
      IMPORTING
        output = wl_ref-refno.
    APPEND wl_ref TO tl_ref2.
*C-There can be case when tl_ref1 has multiple entries so wl_ref is not cleared because in case of single entry it is used further
  ENDLOOP.
  DESCRIBE TABLE tl_ref2 LINES l_n.
  clear wl_ref.
  loop at tl_ref2 into wl_ref.
    move wl_ref-refno to wl_likp-vbeln.
    append wl_likp to tl_likp.
  endloop.
*C Finding the shipment number from the delivery number
  clear wl_likp.
  if not tl_likp is initial .
loop at tl_likp into wl_likp.
    select vbeln
            from
             vbfa
      into corresponding fields of table tl_vttk
     where vbelv = wl_likp-vbeln and vbtyp_n = '8'.
      endloop.
  endif .