Field catalog run time error

Question

When I use Field catalog merge I get an error
i Get a runtime error where it says the internal table passes to field catalog marge has a different fields than I_INTERNAL_TABNAME  . What could be the problem.
Thank you

Answer 1

Are you passing the internal table name and field name as the same or different and also check the data type of the fieldcatalog internal table that you are passing to this FM
Check this code for ur reference.
REPORT ZMK_SHIPMENT_ALV
         no standard page heading
         line-size 105
         line-count 50(5)
         message-id zz.
       TABLES                  *
tables : vttk, "Shipment Header
         vttp, " Shipment Item
         lips. " Delivary Item
***TYPE-POOLS                    *
type-pools : slis.
*WORK AREAS                      *
Work area for field catalog table
data : wa_fldcat type slis_fieldcat_alv.
Work area for Events table
data : wa_events type slis_alv_event.
Work area for layout.
data : wa_layout type slis_layout_alv.
*INTERNAL TABLES                  *
Shimpment Details
data : begin of itab occurs 0,
       tknum like vttk-tknum,
       shtyp like vttk-shtyp,
       tpnum like vttp-tpnum,
       vbeln like vttp-vbeln,
       end of itab.
data : begin of itab1 occurs 0,
       vbeln like lips-vbeln,
       posnr like lips-posnr,
       matnr like lips-matnr,
       lfimg like lips-lfimg,
       meins like lips-meins,
       end of itab1.
For field catalog table
data : it_fldcats type slis_t_fieldcat_alv.
For Events table
data : it_event type slis_t_event.
For layout.
data : it_layout type slis_layout_alv.
For field catalog table
data : it_fldcats1 type slis_t_fieldcat_alv.
For Events table
data : it_event1 type slis_t_event.
data : v_repid like sy-repid.
*Data Declaration
data: v_index type sy-index,
      v_vbeln like lips-vbeln.
*SELECT-OPTIONS
selection-screen begin of block b with frame title text-001.
          select-options : s_tknum for vttk-tknum .
selection-screen end of block b.
*INITIALIZATION
initialization.
v_repid = sy-repid.
*START-OF-SELCTION
start-of-selection.
  perform populate-data.
  sort itab by tknum.
top-of-page.
write : 'Shipment wise Delivary Report'.
end-of-selection.
  perform build-fieldcatalog.
  perform modify-fieldcatalog.
  perform build-events.
  perform modify-events.
  perform set-layout.
perform set-pfstatus.
  perform list-display.
*&      Form  populate-data
    Retrives the Shipment data depending on the selection criteria   *
FORM populate-data.
select vttk~tknum
       vttk~shtyp
       vttp~tpnum
       vttp~vbeln
       into table itab
       from vttk
       join vttp
       on vttptknum = vttktknum
       where vttk~tknum  in s_tknum.
   if sy-subrc <> 0.
    message e999 with 'NO DATA FOUND'.
    exit.
  endif.
ENDFORM.                    " populate-data
*&      Form  build-fieldcatalog
      text
-->  p1        text
<--  p2        text
form build-fieldcatalog.
  call function 'REUSE_ALV_FIELDCATALOG_MERGE'
exporting
    i_program_name               = v_repid
    i_internal_tabname           = 'ITAB'
  I_STRUCTURE_NAME             =
  I_CLIENT_NEVER_DISPLAY       = 'X'
    i_inclname                   = v_repid
  I_BYPASSING_BUFFER           =
  I_BUFFER_ACTIVE              =
  changing
    ct_fieldcat                  = it_fldcats
  exceptions
    inconsistent_interface       = 1
    program_error                = 2
    others                       = 3
  if sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
        WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
  endif.
endform.                    " BUILD-FIELDCATALOG
*&      Form  build-events
      text
-->  p1        text
<--  p2        text
FORM build-events.
CALL FUNCTION 'REUSE_ALV_EVENTS_GET'
EXPORTING
   I_LIST_TYPE           = 0
IMPORTING
   ET_EVENTS             = it_event
EXCEPTIONS
   LIST_TYPE_WRONG       = 1
   OTHERS                = 2
IF SY-SUBRC <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
        WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
ENDFORM.                    " build-events
*&      Form  set-layout
      text
-->  p1        text
<--  p2        text
FORM set-layout.
  wa_layout-zebra          = 'X'.
  wa_layout-colwidth_optimize = 'X'.
  wa_layout-no_colhead = space.
  wa_layout-no_vline = space.
ENDFORM.                    " set-layout
*&      Form  list-display
      text
-->  p1        text
<--  p2        text
FORM list-display.
CALL FUNCTION 'REUSE_ALV_LIST_DISPLAY'
EXPORTING
  I_INTERFACE_CHECK              = ' '
  I_BYPASSING_BUFFER             =
  I_BUFFER_ACTIVE                = ' '
   I_CALLBACK_PROGRAM             = v_repid
  I_CALLBACK_PF_STATUS_SET       = ' '
   I_CALLBACK_USER_COMMAND        = 'USER_COMMAND'
  I_STRUCTURE_NAME               =
   IS_LAYOUT                      = wa_layout
   IT_FIELDCAT                    = it_fldcats
  IT_EXCLUDING                   =
  IT_SPECIAL_GROUPS              =
  IT_SORT                        =
  IT_FILTER                      =
  IS_SEL_HIDE                    =
  I_DEFAULT                      = 'X'
  I_SAVE                         = ' '
  IS_VARIANT                     =
   IT_EVENTS                      = it_event
  IT_EVENT_EXIT                  =
  IS_PRINT                       =
  IS_REPREP_ID                   =
  I_SCREEN_START_COLUMN          = 0
  I_SCREEN_START_LINE            = 0
  I_SCREEN_END_COLUMN            = 0
  I_SCREEN_END_LINE              = 0
IMPORTING
  E_EXIT_CAUSED_BY_CALLER        =
  ES_EXIT_CAUSED_BY_USER         =
  TABLES
    T_OUTTAB                       = itab
EXCEPTIONS
   PROGRAM_ERROR                  = 1
   OTHERS                         = 2
IF SY-SUBRC <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
        WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
ENDFORM.                    " list-display
*&      Form  modify-fieldcatalog
      text
-->  p1        text
<--  p2        text
FORM modify-fieldcatalog.
loop at it_fldcats into wa_fldcat.
    case wa_fldcat-fieldname.
      when 'TKNUM'.
        wa_fldcat-seltext_l = 'Ship No.'.
        wa_fldcat-col_pos = 1.
        wa_fldcat-ddictxt = 'L'.
        when 'SHTYP'.
        wa_fldcat-seltext_l = 'Ship Type'.
        wa_fldcat-col_pos = 2.
        wa_fldcat-ddictxt = 'L'.
     when 'TPNUM'.
        wa_fldcat-seltext_l = 'Item No.'.
        wa_fldcat-col_pos = 3.
        wa_fldcat-ddictxt = 'L'.
     when 'VBELN'.
        wa_fldcat-seltext_l = 'Delivary No.'.
        wa_fldcat-hotspot = 'X'.
        wa_fldcat-col_pos = 4.
        wa_fldcat-ddictxt = 'L'.
    endcase.
   modify it_fldcats from wa_fldcat.
   endloop.
ENDFORM.                    " modify-fieldcatalog
*&      Form  modify-events
      text
-->  p1        text
<--  p2        text
form modify-events.
    read table it_event with key name =
slis_ev_top_of_page into wa_events.
   if sy-subrc = 0.
    wa_events-form = 'HEADER-OF-REPORT'.
    modify it_event from wa_events index sy-tabix.
    clear wa_events.
   endif.
   read table it_event with key name =
slis_ev_end_of_page into wa_events.
   if sy-subrc = 0.
    wa_events-form = 'FOOTER-OF-REPORT'.
    modify it_event from wa_events index sy-tabix.
    clear wa_events.
  endif.
endform.                    " modify-events
*&      Form  HEADER-OF-REPORT
      text
-->  p1        text
<--  p2        text
FORM HEADER-OF-REPORT.
write : 'Shipment Wise Delivary Report'.
ENDFORM.                    " HEADER-OF-REPORT
*&      Form  FOOTER-OF-REPORT
      text
-->  p1        text
<--  p2        text
FORM FOOTER-OF-REPORT.
write : 'End of Report'.
ENDFORM.                    " FOOTER-OF-REPORT
*&      Form  USER_COMMAND
      User command for Calling Transaction VT03N, Execute and Refresh
FORM user_command USING    p_ucomm    LIKE sy-ucomm
                         p_selfield TYPE slis_selfield.
  V_INDEX = P_SELFIELD-TABINDEX.      " holds the selected table index
  CASE p_ucomm.
    WHEN '&IC1'.
     IF p_selfield-fieldname eq 'VBELN'.
      perform secondary_list.
     ENDIF.
  ENDCASE.
ENDFORM.                    " USER_COMMAND
*&      Form  secondary_list
      text
-->  p1        text
<--  p2        text
FORM secondary_list.
perform get_data1.
perform build-fieldcatalog1.
  perform modify-fieldcatalog1.
  perform build-events1.
  perform modify-events1.
perform set-layout.
perform set-pfstatus.
  perform list-display1.
ENDFORM.                    " secondary_list
*&      Form  build-fieldcatalog1
      text
-->  p1        text
<--  p2        text
FORM build-fieldcatalog1.
call function 'REUSE_ALV_FIELDCATALOG_MERGE'
exporting
    i_program_name               = v_repid
    i_internal_tabname           = 'ITAB1'
  I_STRUCTURE_NAME             =
  I_CLIENT_NEVER_DISPLAY       = 'X'
    i_inclname                   = v_repid
  I_BYPASSING_BUFFER           =
  I_BUFFER_ACTIVE              =
  changing
    ct_fieldcat                  = it_fldcats1
  exceptions
    inconsistent_interface       = 1
    program_error                = 2
    others                       = 3
  if sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
        WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
  endif.
ENDFORM.                    " build-fieldcatalog1
*&      Form  modify-fieldcatalog1
      text
-->  p1        text
<--  p2        text
FORM modify-fieldcatalog1.
loop at it_fldcats into wa_fldcat.
    case wa_fldcat-fieldname.
      when 'VBELN'.
        wa_fldcat-seltext_l = 'Delivary No.'.
        wa_fldcat-col_pos = 1.
        wa_fldcat-ddictxt = 'L'.
        when 'POSNR'.
        wa_fldcat-seltext_l = 'Item No'.
        wa_fldcat-col_pos = 2.
        wa_fldcat-ddictxt = 'L'.
     when 'MATNR'.
        wa_fldcat-seltext_l = 'Material'.
        wa_fldcat-col_pos = 3.
        wa_fldcat-ddictxt = 'L'.
     when 'LFIMG'.
        wa_fldcat-seltext_l = 'Quantity'.
        wa_fldcat-col_pos = 4.
        wa_fldcat-ddictxt = 'L'.
     when 'MEINS'.
        wa_fldcat-seltext_l = 'Unit of Measure'.
        wa_fldcat-col_pos = 5.
        wa_fldcat-ddictxt = 'L'.
    endcase.
   modify it_fldcats from wa_fldcat.
   endloop.
ENDFORM.                    " modify-fieldcatalog1
*&      Form  build-events1
      text
-->  p1        text
<--  p2        text
FORM build-events1.
CALL FUNCTION 'REUSE_ALV_EVENTS_GET'
EXPORTING
   I_LIST_TYPE           = 0
IMPORTING
   ET_EVENTS             = it_event1
EXCEPTIONS
   LIST_TYPE_WRONG       = 1
   OTHERS                = 2
IF SY-SUBRC <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
        WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
ENDFORM.                    " build-events1
*&      Form  modify-events1
      text
-->  p1        text
<--  p2        text
FORM modify-events1.
read table it_event1 with key name =
slis_ev_top_of_page into wa_events.
   if sy-subrc = 0.
    wa_events-form = 'HEADER_OF_REPORT_2'.
    modify it_event1 from wa_events index sy-tabix.
    clear wa_events.
   endif.
ENDFORM.                    " modify-events1
*&      Form  list-display1
      text
-->  p1        text
<--  p2        text
FORM list-display1.
CALL FUNCTION 'REUSE_ALV_LIST_DISPLAY'
EXPORTING
  I_INTERFACE_CHECK              = ' '
  I_BYPASSING_BUFFER             =
  I_BUFFER_ACTIVE                = ' '
   I_CALLBACK_PROGRAM             = v_repid
  I_CALLBACK_PF_STATUS_SET       = ' '
  I_CALLBACK_USER_COMMAND        = 'USER_COMMAND'
  I_STRUCTURE_NAME               =
   IS_LAYOUT                      = wa_layout
   IT_FIELDCAT                    = it_fldcats1
  IT_EXCLUDING                   =
  IT_SPECIAL_GROUPS              =
  IT_SORT                        =
  IT_FILTER                      =
  IS_SEL_HIDE                    =
  I_DEFAULT                      = 'X'
  I_SAVE                         = ' '
  IS_VARIANT                     =
   IT_EVENTS                      = it_event1
  IT_EVENT_EXIT                  =
  IS_PRINT                       =
  IS_REPREP_ID                   =
  I_SCREEN_START_COLUMN          = 0
  I_SCREEN_START_LINE            = 0
  I_SCREEN_END_COLUMN            = 0
  I_SCREEN_END_LINE              = 0
IMPORTING
  E_EXIT_CAUSED_BY_CALLER        =
  ES_EXIT_CAUSED_BY_USER         =
  TABLES
    T_OUTTAB                       = itab1
EXCEPTIONS
   PROGRAM_ERROR                  = 1
   OTHERS                         = 2
IF SY-SUBRC <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
        WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
ENDFORM.                    " list-display1
*&      Form  get_data1
      text
-->  p1        text
<--  p2        text
FORM get_data1.
READ TABLE itab INDEX V_INDEX.
v_vbeln = itab-vbeln.
select vbeln
        posnr
        matnr
        lfimg
        meins
        from lips
        into table itab1
        where vbeln eq v_vbeln.
ENDFORM.                    " get_data1
*&      Form  header_of_report_2
      text
-->  p1        text
<--  p2        text
FORM header_of_report_2.
write: 'Delivary item list'.
ENDFORM.                    " header_of_report_2
*-- callling a transaction code by passing the initial screen value.
*&      Form  USER_COMMAND
form user_command using    p_ucomm    like sy-ucomm
                         p_selfield type slis_selfield.
  data : l_index like sy-index,
         l_refbn like cooi-refbn.
  l_index = p_selfield-tabindex.       " holds the selected table index
  clear l_refbn.
  case p_ucomm.
    when '&IC1'.
      clear l_refbn.
      read table it_outtab index l_index.
      if sy-subrc eq 0.
        l_refbn = it_outtab-refbn.
        if not l_refbn is initial.
          set parameter id 'BES' field l_refbn.
          call transaction 'ME23' and skip first screen.
        endif.
      else.
        message e999 with text-014.
      endif.
  endcase.
endif.