ALV returning blank output

Question

Hi all,
I'm converting a report into ALV format. My problem over is that my ALV output is blank.
FYI, I've checked on the internal table that I passed into the function 'REUSE_ALV_GRID_DISPLAY', there are 50 rows of data inside the internal table. Using the same internal table, I can even write out the report.
Even when I try to pass it in for ALV output, everything is display nicely (title, column header, column size) except the content are 50 blank rows.
Anyone can help? Thanks in advance!
Regards,
JT

Answer 1

Hi all,
I've changed the order of field catalog to be the same as list display order as well as all the field name to upper-case.
The output I get even worse. It only show me title and a blank grey page.
I did ALV report for 3 times previously without any problem. This is the first time I encountered such problem and I've been debugging the problem for the past 4 days.
Below is part of my code.
TYPE-POOLS:  SLIS.
DATA: I_FIELDCAT TYPE SLIS_T_FIELDCAT_ALV WITH HEADER LINE,
      I_SORT TYPE SLIS_T_SORTINFO_ALV WITH HEADER LINE,
      I_LIST_TOP_OF_PAGE TYPE SLIS_T_LISTHEADER WITH HEADER LINE,
      I_EVENTS TYPE SLIS_T_EVENT WITH HEADER LINE,
      F2CODE LIKE SY-UCOMM  VALUE '&ETA',
      LAYOUT TYPE  SLIS_LAYOUT_ALV,
      GT_SLIS_T_EVENTS TYPE  SLIS_T_EVENT,
      GW_SLIS_EVENTS TYPE  SLIS_ALV_EVENT,
      C_PROG LIKE SY-REPID,
      INX2 TYPE SY-TABIX.
TYPES: BEGIN OF TYPE_ALV,
         LZONE     LIKE KNA1-LZONE,
         NAME1     LIKE KNA1-NAME1 ,
         VTEXT     LIKE TZONT-VTEXT,
         COST      TYPE P DECIMALS 2,
         NTGEW     TYPE P DECIMALS 2,
         RMMT      TYPE P DECIMALS 2,
         MATKL     LIKE LIPS-MATKL,
       END OF TYPE_ALV.
DATA: REC_ALV TYPE TYPE_ALV OCCURS 0 WITH HEADER LINE.
Move data into rec_alv
    CLEAR: rec_alv.
    rec_alv-lzone = rec-lzone.
    rec_alv-name1 = rec-name1.
    rec_alv-vtext = rec-vtext.
    rec_alv-cost = cost_text.
    rec_alv-ntgew = btgew_text.
    rec_alv-rmmt = rmmt_text.
    rec_alv-matkl = rec-matkl.
    APPEND rec_alv.
FORM BUILD_FIELDCAT
FORM BUILD_FIELDCAT.
  PERFORM FIELDCAT USING:
    'REC_ALV'  ' '  'LZONE'  '20'  'Transporter'                   ' '  ' ',
    'REC_ALV'  ' '  'NAME1'  '35'  'Customer'                     ' '  ' ',
    'REC_ALV'  ' '  'VTEXT'  '40'  'Area Coverage'               ' '  ' ',
    'REC_ALV'  ' '  'COST'   '15'  'Transport Cost Amount'  ' '  'X',
    'REC_ALV'  ' '  'NTGEW'  '15'  'Sales Volume'             ' '  'X',
    'REC_ALV'  ' '  'RMMT'   '15'  'Transport Cost'             ' '  'X',
    'REC_ALV'  ' '  'MATKL'  '20'  'Material Group'             ' '  ' '.
ENDFORM.
FORM BUILD_SORTTABLE
FORM BUILD_SORTTABLE.
  PERFORM SORTTABLE USING:
    '1' 'LZONE' 'REC_ALV' 'X' ' ' ' ',
    '2' 'NAME1' 'REC_ALV' 'X' ' ' ' ',
    '3' 'VTEXT' 'REC_ALV' 'X' ' ' ' ',
    '4' 'COST'  'REC_ALV' 'X' ' ' 'X',
    '5' 'NTGEW' 'REC_ALV' 'X' ' ' 'X',
    '6' 'RMMT'  'REC_ALV' 'X' ' ' 'X',
    '7' 'MATKL' 'REC_ALV' 'X' ' ' ' '.
ENDFORM.
FORM DISPLAY_ALV
FORM DISPLAY_ALV USING TITLE TYPE C.
  C_PROG = SY-REPID.
  CALL FUNCTION  'REUSE_ALV_GRID_DISPLAY'
    EXPORTING
      I_CALLBACK_PROGRAM =  C_PROG
      IT_FIELDCAT =  I_FIELDCAT[]
      IS_LAYOUT = LAYOUT
      I_GRID_TITLE = TITLE
      IT_SORT = I_SORT[]
      I_SAVE = 'A'
    TABLES
      T_OUTTAB = REC_ALV
    EXCEPTIONS
      PROGRAM_ERROR = 1
      OTHERS        = 2.
ENDFORM.