Error in background process.

Question

I have a report that lets you choose between executing in background or not. As far as I see, in both cases the same subroutines are executed, though if you choose to execute directly a list is shown on screen and you are asked to push exec to have the last part of the program executed.
I am getting an error when choosing background, and so far I get a time-out error whenever I try to debug.
Is it possible that a variable is not being cleared because the process is in background?
I paste below the report's code, in case someone sees any difference I'm missing...
Thanks in advance,
S.
CODE:
REPORT ZFI_GENERACION_UTE_AF
                         MESSAGE-ID ZFI
                         NO STANDARD PAGE HEADING
                         LINE-SIZE 116.
*Declaración de includes
INCLUDE .
INCLUDE ZFI_BATCH_INPUT.
INCLUDE ZFI_UTE_TOP_AF.
Definición de la pantalla de selección
SELECTION-SCREEN BEGIN OF BLOCK B1 WITH FRAME TITLE TEXT-001.
PARAMETERS: P_KOKRS LIKE TKA01-KOKRS OBLIGATORY.
SELECT-OPTIONS: P_BURKSN FOR SKB1-BUKRS OBLIGATORY.
SELECT-OPTIONS: P_GSBERN FOR BSIS-GSBER.
SELECT-OPTIONS: P_BURKSU FOR SKB1-BUKRS.
SELECT-OPTIONS: P_GSBERU FOR BSIS-GSBER.
PARAMETERS: P_GAJHR LIKE BKPF-GJAHR OBLIGATORY,
            S_MONAT LIKE BSIS-MONAT OBLIGATORY,
            P_BLDAT LIKE BKPF-BLDAT OBLIGATORY.
SELECTION-SCREEN END OF BLOCK B1.
Bloque1 'Tipo de procesamiento: Online - Background'
SELECTION-SCREEN BEGIN OF BLOCK BLOQUE1 WITH FRAME TITLE TEXT-004.
PARAMETERS:
  X_ONLINE NO-DISPLAY, " RADIOBUTTON GROUP TYPE, " Ejecutar on-line
  X_BATCH  NO-DISPLAY. "RADIOBUTTON GROUP TYPE. " Ejecutar en fondo
SELECTION-SCREEN END OF BLOCK BLOQUE1.
SELECTION-SCREEN BEGIN OF BLOCK BLOQUE3 WITH FRAME TITLE TEXT-016.
PARAMETERS:
  P_PARC RADIOBUTTON GROUP TIPO,
  P_TOTAL RADIOBUTTON GROUP TIPO DEFAULT 'X'.
SELECTION-SCREEN END OF BLOCK BLOQUE3.
PARAMETERS: NUM_DOCS TYPE I DEFAULT '1000'.
PARAMETERS: P_CODIGO TYPE ZCODIGO_NEGOCIO.
*Declaración de includes
INCLUDE ZFI_UTES_F001_AF.
                 LOGICA DEL PROGRAMA
*Definición de inicializaciones
INITIALIZATION.
  PERFORM INICIALIZAR_DATOS.
*Proceso principal
START-OF-SELECTION.
  PERFORM INI_CABECERA.
  Procesamiento Online
  CALL FUNCTION 'SAPGUI_PROGRESS_INDICATOR'
       EXPORTING
            PERCENTAGE = 0
            TEXT       = TEXT-011.
  CLEAR CONTABILIZADO.
  PERFORM: INICIALIZAR_ESTRUCTURAS,
           CONFECCION_ASIENTOS,
  Si UTEs impuras se crearan los siguientes asientos
En la empresa ZZZI sólo se generarán apuntes para las cuentas
de la tabla ZHKONT_IMPURAS en las empresas ZZZ8 y ZZZ9.
add sis3e 14/01/05
          CONFECCION_ASIENTO_NOD_FERR,
fin add sis3e 14/01/05
           CREAR_ASIENTOS_CONTRARIOS.
  CLEAR SALIR.
*Acciones de final de proceso
END-OF-SELECTION.
  PERFORM VISUALIZAR_TI_APUNTES.
  IF NOT SY-BATCH IS INITIAL.
    PERFORM CONTABILIZAR_DOCUMENTOS.
  ENDIF.
*Definición de cabeceras del listado
TOP-OF-PAGE.
  PERFORM BATCH-HEADING(RSBTCHH0).
  PERFORM CABECERA_INICIAL.
TOP-OF-PAGE DURING LINE-SELECTION.
  PERFORM BATCH-HEADING(RSBTCHH0).
*Definición y control de acciones a tomar según entrada del usuario
AT USER-COMMAND.
  CASE SY-UCOMM.
    WHEN 'EJEC'.                       " Ejecutar Contabilizaciones
      PERFORM CONTABILIZAR_DOCUMENTOS.
    WHEN 'ENDE'.
    Finalizar
      LEAVE PROGRAM.
    WHEN 'ABR'.
    Cancelar
      LEAVE PROGRAM.
  ENDCASE.
*Validaciones de los parámetros de entrada
AT SELECTION-SCREEN.
  KOKRS = P_KOKRS.
moneda de la sociedad
  SELECT SINGLE WAERS FROM TKA01 INTO TKA01-WAERS
                      WHERE KOKRS = KOKRS.
  MONEDA_FERR = TKA01-WAERS.
  IF CONTROL_SELECTION = '1'.
    PERFORM VALIDACIONES_SCREEN_SELECCION.
    CONTROL_SELECTION = 2.
  ENDIF.

Answer 1

Hi,
Did you  mean to say 'last part' of the program is executed after pressing button on application toolbar?
So even if you execute in background the list should appear and after that you need to see what the program is doing,
Rgds,
Sandeep