Defining table from DDIC-structure dynamically

Hi folks!
Does anybody know whether it is possible to build an internal table from DDIC-structures dynamically?
I have a deep structured itab_upload(whose structure is defined in the DDIC), which contains 2 fields(Number Name) and a third field which contains itab_desc.
This itab_desc can contain either 2 fields(Number Name) and a third field which contains another itab_desc <b>or</b> 3 fields for numbers(without any other itab).If itab_desc contains another itab_desc, the second itab_desc contains only 3 fields for numbers and names...
help will be very appreciated and points will be rewarded!
Felix

Hi Felix,
Please find below the material which will help you to solve your problem :-
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/b332e090-0201-0010-bdbd-b735e96fe0ae
Please reward points if helpful.
Regards.
Srikanta Gope.
[email protected]

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kind regards
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DATA :      DD05M_TAB LIKE DD05M OCCURS 0 WITH HEADER LINE .
DATA :      DD08V_TAB LIKE DD08V OCCURS 0 WITH HEADER LINE .
DATA :      DD12V_TAB LIKE DD12V OCCURS 0 WITH HEADER LINE .
DATA :      DD17V_TAB LIKE DD17V OCCURS 0 WITH HEADER LINE .
DATA :      DD35V_TAB LIKE DD35V OCCURS 0 WITH HEADER LINE .
DATA :      DD36M_TAB LIKE DD36M OCCURS 0 WITH HEADER LINE .
DATA : lt_fcat TYPE lvc_t_fcat ,
       ls_fcat TYPE lvc_s_fcat .
DATA : lt_table TYPE REF TO data.
DATA : ZTABL1 .
CALL FUNCTION 'DDIF_TABL_GET'
EXPORTING
    NAME                = 'ZTABL1'
TABLES
    DD03P_TAB           = DD03P_TAB
    DD05M_TAB           = DD05M_TAB
    DD08V_TAB           = DD08V_TAB
    DD12V_TAB           = DD12V_TAB
    DD17V_TAB           = DD17V_TAB
    DD35V_TAB           = DD35V_TAB
    DD36M_TAB           = DD36M_TAB
EXCEPTIONS
   ILLEGAL_INPUT       = 1
    OTHERS              = 2
LOOP AT DD05M_TAB WHERE FIELDNAME NE 'MANDT' .
DD05M_TAB-FIELDNAME = 'FIELD2' .
MODIFY DD05M_TAB .
ENDLOOP.
LOOP AT DD03P_TAB WHERE FIELDNAME NE 'MANDT'
DD03P_TAB-FIELDNAME = 'FIELD2' .
MODIFY DD03P_TAB .
ENDLOOP.
LOOP AT DD08V_TAB WHERE FIELDNAME NE 'MANDT' .
DD08V_TAB-FIELDNAME = 'FIELD2' .
APPEND DD08V_TAB .
ENDLOOP.
LOOP AT DD35V_TAB WHERE FIELDNAME NE 'MANDT' .
DD35V_TAB-FIELDNAME = 'FIELD2' .
MODIFY DD35V_TAB .
ENDLOOP.
LOOP AT DD36M_TAB WHERE FIELDNAME NE 'MANDT' .
DD36M_TAB-FIELDNAME = 'FIELD2' .
MODIFY DD36M_TAB .
ENDLOOP.
CALL FUNCTION 'DDIF_TABL_PUT'
EXPORTING
    NAME                    = 'ZTABL1'
TABLES
   DD03P_TAB               = DD03P_TAB
   DD05M_TAB               = DD05M_TAB
   DD08V_TAB               = DD08V_TAB
   DD35V_TAB               = DD35V_TAB
   DD36M_TAB               = DD36M_TAB
EXCEPTIONS
   TABL_NOT_FOUND          = 1
   NAME_INCONSISTENT       = 2
   TABL_INCONSISTENT       = 3
   PUT_FAILURE             = 4
   PUT_REFUSED             = 5
   OTHERS                  = 6
COMMIT WORK AND WAIT .
DATA : lv_subrc like sy-subrc .
CALL FUNCTION 'DDIF_TABL_ACTIVATE'
    EXPORTING
      NAME              = 'ZTABL1'
      AUTH_CHK          = ' '
   IMPORTING
     RC                = lv_subrc
    EXCEPTIONS
      NOT_FOUND         = 1
      PUT_FAILURE       = 2
      OTHERS            = 3
COMMIT WORK AND WAIT .
clear : lt_fcat , lt_fcat[] .
LOOP AT DD03P_TAB .
MOVE-CORRESPONDING DD03P_TAB TO ls_fcat .
APPEND ls_fcat TO lt_fcat .
ENDLOOP.
PERFORM process.
*&      Form process
form process.
FIELD-SYMBOLS : <table> TYPE table .
FIELD-SYMBOLS : <s_table> TYPE ANY .
FIELD-SYMBOLS : <f_1> TYPE ANY .
DATA : ls_ZTABL1 type ZTABL1 .
CALL METHOD cl_alv_table_create=>create_dynamic_table
                          EXPORTING it_fieldcatalog = lt_fcat
                          IMPORTING ep_table = lt_table.
   ASSIGN lt_table->* TO <table>.
   ASSIGN LOCAL COPY OF INITIAL LINE OF <table> TO <s_table>.
LOOP AT lt_fcat INTO ls_fcat.
   IF ls_fcat-fieldname = 'FIELD2' .
     ASSIGN COMPONENT ls_fcat-fieldname OF STRUCTURE <s_table> TO <f_1> .
     <f_1> = 'A' .
   ENDIF.
ENDLOOP.
MOVE-CORRESPONDING <s_table> TO ls_ZTABL1 .
INSERT INTO ZTABL1 values ls_ZTABL1.
endform.                    " process

Defining table from DDIC-structure dynamically

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