Problem in alv fieldcat function

Question

data: begin of it_mara occurs 100,
         matnr LIKE mara-matnr,
         ernam LIKE mara-ernam,
         ersda LIKE mara-ersda,
         mtart LIKE mara-mtart,
       end of it_mara.
i am using the above mentioned int tab.
the following function is returning an error which states that ..
"The ABAP program lines are wider than the internal table."
  i_repid = sy-repid.
  CALL FUNCTION 'REUSE_ALV_FIELDCATALOG_MERGE'
   EXPORTING
     I_PROGRAM_NAME               = i_repid
     I_INTERNAL_TABNAME           = 'IT_MARA'
  I_STRUCTURE_NAME             =
  I_CLIENT_NEVER_DISPLAY       = 'X'
   I_INCLNAME                   = i_repid
  I_BYPASSING_BUFFER           =
  I_BUFFER_ACTIVE              =
    CHANGING
      CT_FIELDCAT                  = int_fcat
   EXCEPTIONS
     INCONSISTENT_INTERFACE       = 1
    PROGRAM_ERROR                = 2
     OTHERS                       = 3
plz suggest how this problem can be resolved ..

Answer 1

Hi
see this small program so that you can understand very well
REPORT  Z_TEST_ALV_MERGE.
Tables : Mara,makt.
type-pools: slis.
data: FEILDCAT type slis_t_fieldcat_alv.
data : begin of itab occurs 0,
       MATNR like mara-matnr,
       ERSDA like mara-ersda,
       PSTAT like mara-pstat,
       MTART like mara-mtart,
       MAKTx like makt-maktx,
       end of itab.
data: I_REPID like sy-repid.
I_REPID = sy-repid.
select * from mara into corresponding fields of itab.
select * from makt into corresponding fields of itab where matnr =
itab-matnr.
append itab.
endselect.
endselect.
CALL FUNCTION 'REUSE_ALV_FIELDCATALOG_MERGE'
EXPORTING
   I_PROGRAM_NAME               = I_REPID
   I_INTERNAL_TABNAME           = 'ITAB'
   I_INCLNAME                   = I_REPID
  CHANGING
    CT_FIELDCAT                  = FEILDCAT.
CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
EXPORTING
   IT_FIELDCAT                       = FEILDCAT
  TABLES
    T_OUTTAB                          = IT
reward if useful