Runtime error of GETWA_NOT_ASSIGNED using cl_salv_bs_runtime_info=>get_data_ref

[vin_abap]

My below code runs in foreground, but gives a dump in background.

SUBMIT rpuaud00 WITH lo_blg = 'X'
      WITH r_tclasa = 'X'
      WITH SELECTION-TABLE it_selection
    AND RETURN.

TRY.
    cl_salv_bs_runtime_info=>get_data_ref( IMPORTING r_data = lr_pay_data ).
    ASSIGN lr_pay_data->* TO <lt_pay_data>.
  CATCH cx_salv_bs_sc_runtime_info.
    MESSAGE `Unable to retrieve ALV data` TYPE 'E'.
ENDTRY.

cl_salv_bs_runtime_info=>clear_all( ).
LOOP AT <lt_pay_data> ASSIGNING <lt_test>.
  MOVE-CORRESPONDING <lt_test> TO wa_list .
  APPEND wa_list TO it_list 
ENDLOOP.

-----------------------------

Runtime Errors GETWA_NOT_ASSIGNED

Field symbol has not yet been assigned.

You attempted to access an unassigned field symbol (data segment "-1").

-------------------

Kindly advise.

[matt]

Please in future use the "code" button when posting code. If copy pasting from an editor, using right-click paste as plain text.

I've done it for you this time. See how it makes your question more readable?

[matt]

Run in debug. Is lr_pay_data->* initial?

[vin_abap]

Hi Matthew

Yup it is initial.

The cl_salv_bs_runtime_info is not fetching values when run in background mode.

[hubert_heitzer]

ALVs are used to communicate with users.
In background mode there are no users for a direct communication.
I think the system does not provide support for the (CONTROL?-)framework in background task..

Regards,

Hubert

[vin_abap]

Any other ways to get the data read in bg?

[hubert_heitzer]

IF sy-batch EQ abap_true.
  " you do not need ALVs ;)
ENDIF.

[vin_abap]

How to bring the data from 'rpuaud00' into my program?

[vin_abap]

I think the ' SUBMIT rpuaud00 ' itself is not working in the background