SAP ABAP IMPORT_MISMATCH_ERROR

[former_member1274922]

I am trying to get a table (BKPF) from the RFKSLD00 that includes the monat (reporting period) field as I need it in the following code:

REPORT  ZSAM3.

 TYPES: BEGIN OF ty_report,
          rec_acc TYPE skont,
          vendor TYPE LFA1-LIFNR,
          jan_deb TYPE BSEG-WRBTR,
          jan_cred TYPE BSEG-WRBTR,
          feb_deb TYPE BSEG-WRBTR,
          feb_cred TYPE BSEG-WRBTR,
          mar_deb TYPE BSEG-WRBTR,
          mar_cred TYPE BSEG-WRBTR,
          apr_deb TYPE BSEG-WRBTR,
          apr_cred TYPE BSEG-WRBTR,
          may_deb TYPE BSEG-WRBTR,
          may_cred TYPE BSEG-WRBTR,
          jun_deb TYPE BSEG-WRBTR,
          jun_cred TYPE BSEG-WRBTR,
          jul_deb TYPE BSEG-WRBTR,
          jul_cred TYPE BSEG-WRBTR,
          aug_deb TYPE BSEG-WRBTR,
          aug_cred TYPE BSEG-WRBTR,
          sep_deb TYPE BSEG-WRBTR,
          sep_cred TYPE BSEG-WRBTR,
          oct_deb TYPE BSEG-WRBTR,
          oct_cred TYPE BSEG-WRBTR,
          nov_deb TYPE BSEG-WRBTR,
          nov_cred TYPE BSEG-WRBTR,
          dec_deb TYPE BSEG-WRBTR,
          dec_cred TYPE BSEG-WRBTR,
          acc_bal_deb TYPE BSEG-WRBTR,
          acc_bal_cred TYPE BSEG-WRBTR,
        END OF ty_report,
        tt_report TYPE TABLE OF ty_report.

DATA:  lt_report TYPE tt_report,
       lv_ukurs type tcurr-ukurs,
       Tcurr1 type tcurr,
       fieldname(4) type c,
       fnamedebit(20) type c,
       fnamecredit(20) type c.

FIELD-SYMBOLS: <fs_rep> LIKE LINE OF lt_report.

 select single ukurs from tcurr
        into lv_ukurs
        where fcurr = 'EUR'
        and   tcurr = 'AUD'. "<- your  local currency

DATA: gt_fkont     TYPE STANDARD TABLE OF foap_s_rfksld00_list1,
      gt_fkont_sum TYPE STANDARD TABLE OF foap_s_rfksld00_list1,
      gt_BKPF TYPE STANDARD TABLE OF BKPF,
      lcl_table TYPE REF TO cl_abap_tabledescr,
      lcl_struc TYPE REF TO cl_abap_structdescr,
      it_fields TYPE abap_compdescr_tab,
      wa_fields TYPE abap_compdescr.

FIELD-SYMBOLS: <itab> TYPE ANY,
               <pos_data> LIKE LINE OF gt_BKPF.

  cl_salv_bs_runtime_info=>set(
    EXPORTING display  = abap_false
              metadata = abap_false
              structure = ''
              data     = abap_true ).

SUBMIT RFKSLD00 via SELECTION-SCREEN and return.

TRY.
    cl_salv_bs_runtime_info=>get_data(
      IMPORTING t_data = gt_BKPF  ).

  CATCH cx_salv_bs_sc_runtime_info.
    MESSAGE `Unable to retrieve ALV data` TYPE 'E'.
ENDTRY.

ASSIGN gt_BKPF TO <itab>.

START-OF-SELECTION.
* Get the Table details
  lcl_table ?= cl_abap_typedescr=>describe_by_data( <itab> ).

* Get the table line type i.e., structure details
  lcl_struc ?= lcl_table->get_table_line_type( ).

* Get the components(fields) of the table line
  it_fields = lcl_struc->components.

  LOOP AT it_fields INTO wa_fields.
    WRITE: / wa_fields-name.
  ENDLOOP.

LOOP AT gt_BKPF ASSIGNING <pos_data>.

 APPEND INITIAL LINE to lt_report ASSIGNING <fs_rep>.
 MOVE-CORRESPONDING <pos_data> TO <fs_rep>.
 WRITE: / <pos_data>-monat.
ENDLOOP.

Write: 'Program End!'.

I am getting the following runtime error:

CX_SY_IMPORT_MISMATCH_ERROR

When impoting "T_DATA", the componet 1 in the dataset has a different length from the corresponding component of the target object in the program *CL_SALV_BS_RUNTIME_INFO======CP"

The length is 20 in the data set but 6 in the program

Maybe I cannot access the BKPF table. Any fixes?