[Vero2007]

Buenas, tengo UN problemas que igual me puedan ayudar a solucionar.
Tengo un alv en una dynpro y me muestra bien la información de una tabla ,pasandole la estructura y los datos
EL PROBLEMA viene cuando quiero que los campos tengan un determinado campo y texto para visualizar, porque tengo
que rellenar un it_fieldcatalog (catalogo) para que tengas las características q quiero. En ese momento SAP me
da un DUMP:

************************************************************
Txt.brv.
Field symbol has not yet been assigned.

Anál.errores
You attempted to access an unassigned field symbol
(data segment 32821).

This error may occur for any of the following reasons:
- You address a typed field symbol before it is set using ASSIGN
- You address a field symbol that points to a line in an internal table
that has been deleted
- You address a field symbol that had previously been reset using
UNASSIGN, or that pointed to a local field that no longer exists
- You address a global function interface parameter, even
though the relevant function module is not active,
that is it is not in the list of active calls. You can get the list
of active calls from the this short dump.

macro_cell_data_get
<ls_fcat>
<ls_data>
<l_field_value>
ls_lvc_data-value.

> new API
if ir_salv_adapter is bound.
clear ls_lvc_data-style.

****************************************************************

Lo que yo tengo en el codigo es lo siguiente:

*--------------------------------------------------------------------
* G L O B A L I N T E R N A L T A B L E S
*--------------------------------------------------------------------

DATA: gi_zfitlogs TYPE TABLE OF zfitlogs.

DATA: g_it_logs TYPE STANDARD TABLE OF zfitlogs WITH HEADER LINE.

DATA: gi_fieldcat1 TYPE LVC_T_FCAT.

*&---------------------------------------------------------------------*
*& Module STATUS_1500 OUTPUT
*&---------------------------------------------------------------------*
* text
*----------------------------------------------------------------------*
MODULE STATUS_1500 OUTPUT.
SET PF-STATUS 'MENU1500'.
SET TITLEBAR 'TITULO1500'.

* Crea los objetos
IF go_custom_container IS INITIAL.

CREATE OBJECT go_custom_container
EXPORTING
container_name = 'ALV_CONTAINER'.

CREATE OBJECT go_grid
EXPORTING
i_parent = go_custom_container.

ELSE.
CALL METHOD go_grid->refresh_table_display.
ENDIF.

* Rellenar el catalogo
PERFORM rellenar_catalogo1.


* Rellenar el alv-grid
PERFORM load_data_into_grid.

ENDMODULE. " STATUS_1500 OUTPUT

*&---------------------------------------------------------------------*
*& Form load_data_into_grid
*&---------------------------------------------------------------------*
*& Con la tabla rellena de información para la alv, muestra una alv
*& en una dynpro
*&---------------------------------------------------------------------*
FORM load_data_into_grid.

* Read data from table ZFITLOGS
SELECT * FROM zfitlogs "client specified
APPENDING TABLE gi_zfitlogs
UP TO RSEUMOD-TBMAXSEL ROWS BYPASSING BUFFER
WHERE zsior IN r_zsior
AND ztpop IN r_ztpop
AND zprog IN r_zprog
AND zfent IN r_zfent
AND zfpro IN r_zfpro
AND zestl IN r_zestl
AND usnam IN r_usnam.

* Carga los datos en el grid y los muestra por pantalla
CALL METHOD go_grid->set_table_for_first_display
EXPORTING
i_structure_name = 'ZFITLOGS'
CHANGING
it_outtab = gi_zfitlogs
it_fieldcatalog = gi_fieldcat1.

ENDFORM. " load_data_into_grid

*&---------------------------------------------------------------------*
*& Form rellenar_catalogo1
*&---------------------------------------------------------------------*
* text
*----------------------------------------------------------------------*
* --> p1 text
* <-- p2 text
*----------------------------------------------------------------------*
FORM rellenar_catalogo1 .
data: wa_fieldcat1 type lvc_s_fcat.

" wa_fieldcat1-tabname = 'g_it_logs'.
wa_fieldcat1-FIELDNAME = 'mandt'.
wa_fieldcat1-SELTEXT = 'Mandante'.
wa_fieldcat1-coltext = 'Columna Mandante'.
" wa_fieldcat1-col_pos = 1.
" wa_fieldcat1-outputlen = 20.
append wa_fieldcat1 to gi_fieldcat1.
clear wa_fieldcat1.

wa_fieldcat1-FIELDNAME = 'znlog'.
wa_fieldcat1-SELTEXT = 'Nombre del log'.
wa_fieldcat1-coltext = 'Columna Nombre'.
append wa_fieldcat1 to gi_fieldcat1.
clear wa_fieldcat1.

wa_fieldcat1-FIELDNAME = 'zprog'.
wa_fieldcat1-SELTEXT = 'Nombre del programa'.
wa_fieldcat1-coltext = 'Columna Nombre'.
append wa_fieldcat1 to gi_fieldcat1.
clear wa_fieldcat1.

wa_fieldcat1-FIELDNAME = 'zestl'.
wa_fieldcat1-SELTEXT = 'Nombre del log'.
wa_fieldcat1-coltext = 'Columna Nombre'.
append wa_fieldcat1 to gi_fieldcat1.
clear wa_fieldcat1.

wa_fieldcat1-FIELDNAME = 'usnam'.
wa_fieldcat1-SELTEXT = 'Nombre del log'.
wa_fieldcat1-coltext = 'Columna Nombre'.
append wa_fieldcat1 to gi_fieldcat1.
clear wa_fieldcat1.

wa_fieldcat1-FIELDNAME = 'znlar'.
wa_fieldcat1-SELTEXT = 'Nombre del log'.
wa_fieldcat1-coltext = 'Columna Nombre'.
append wa_fieldcat1 to gi_fieldcat1.
clear wa_fieldcat1.

wa_fieldcat1-FIELDNAME = 'zncor'.
wa_fieldcat1-SELTEXT = 'Nombre del log'.
wa_fieldcat1-coltext = 'Columna Nombre'.
append wa_fieldcat1 to gi_fieldcat1.
clear wa_fieldcat1.

wa_fieldcat1-FIELDNAME = 'zsior'.
wa_fieldcat1-SELTEXT = 'Nombre del log'.
wa_fieldcat1-coltext = 'Columna Nombre'.
append wa_fieldcat1 to gi_fieldcat1.
clear wa_fieldcat1.

wa_fieldcat1-FIELDNAME = 'ztpop'.
wa_fieldcat1-SELTEXT = 'Nombre del log'.
wa_fieldcat1-coltext = 'Columna Nombre'.
append wa_fieldcat1 to gi_fieldcat1.
clear wa_fieldcat1.

wa_fieldcat1-FIELDNAME = 'zfent'.
wa_fieldcat1-SELTEXT = 'Nombre del log'.
wa_fieldcat1-coltext = 'Columna Nombre'.
append wa_fieldcat1 to gi_fieldcat1.
clear wa_fieldcat1.

wa_fieldcat1-FIELDNAME = 'zfpro'.
wa_fieldcat1-SELTEXT = 'Nombre del log'.
wa_fieldcat1-coltext = 'Columna Nombre'.
append wa_fieldcat1 to gi_fieldcat1.
clear wa_fieldcat1.

wa_fieldcat1-FIELDNAME = 'zhumd'.
wa_fieldcat1-SELTEXT = 'Nombre del log'.
wa_fieldcat1-coltext = 'Columna Nombre'.
append wa_fieldcat1 to gi_fieldcat1.
clear wa_fieldcat1.

ENDFORM. " rellenar_catalogo2

*******************************************************+

Necesitaria saber en que me estoy equivocando para que me dé ese DUMP porque ya he probado de todo,
quitando unos campos poniendos otros, no poniendo el nombre del tabname,etc....

Si alguien me puede ayudar se lo agradeceria.

Un saludo, y gracias por adelantado.