'REUSE_ALV_HIERSEQ_LIST_DISPLAY'

HI,

i'm not getting any output for this function. output is some blank columns. plz help me to sort it out.

points guaranteeeeeeee

CALL FUNCTION 'REUSE_ALV_HIERSEQ_LIST_DISPLAY'

EXPORTING

• I_INTERFACE_CHECK = ' '

I_CALLBACK_PROGRAM = v_progname

• I_CALLBACK_PF_STATUS_SET = ' '

• I_CALLBACK_USER_COMMAND = ' '

IS_LAYOUT = WA_LAYOUT

IT_FIELDCAT = IT_FIELDCAT1

• IT_EXCLUDING =

• IT_SPECIAL_GROUPS =

• IT_SORT =

• IT_FILTER =

• IS_SEL_HIDE =

• I_SCREEN_START_COLUMN = 0

• I_SCREEN_START_LINE = 0

• I_SCREEN_END_COLUMN = 0

• I_SCREEN_END_LINE = 0

• I_DEFAULT = 'X'

I_SAVE = 'A'

• IS_VARIANT =

IT_EVENTS = IT_EVENTCAT

• IT_EVENT_EXIT =

i_tabname_header = 'IT_HEADER'

i_tabname_item = 'IT_ITEMS'

• I_STRUCTURE_NAME_HEADER =

• I_STRUCTURE_NAME_ITEM =

is_keyinfo = WA_keyinfo

• IS_PRINT =

• IS_REPREP_ID =

• I_BYPASSING_BUFFER =

• I_BUFFER_ACTIVE =

• IR_SALV_HIERSEQ_ADAPTER =

• IT_EXCEPT_QINFO =

• I_SUPPRESS_EMPTY_DATA = ABAP_FALSE

• IMPORTING

• E_EXIT_CAUSED_BY_CALLER =

• ES_EXIT_CAUSED_BY_USER =

tables

t_outtab_header = IT_HEADER

t_outtab_item = IT_ITEMS

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.