Getting metadata for FMs where data structure elements also have structure

Question

Hi,
I'm sorry if this is a double post, but I added this initially to a thread that was already set to answered, and I'm not sure of the protocol - if there will be any further responses if that is the case, so I'm opening this new threas as well.
I've been using RFC_GET_FUNCTION_INTERFACE and RFC_GET_STRUCTURE_DEFINITION successfully for a number of years, but now I have a problem. Some FMs, like /POSDW/CREATE_TRANSACTIONS_EXT, have parameters that have structures, whose elements also have structure. But RFC_GET_STRUCTURE_DEFINITION does not give a handle to get the structure of a returned data element.
Does anybody know how I can work around this?

Answer 1

Hi,
I think you can use the code similar to the one below...
some of the things not covered in this are
1. all types for which   CALL FUNCTION 'RFC_GET_NAMETAB' is not returning result, you can call CALL FUNCTION 'RFC_GET_STRUCTURE_DEFINITION' directly. I have not covered that in this code. Hope this is helps in resolving your issue.
Also, the code is not optimized. So there is some scope for optimization of this code.
REPORT  ZTEST_GET_SREUCTURE.
DATA : PARAMS     type table of     RFC_FUNINT,
      ls_params like line of params.
data: NAMETAB     type table of     X031L,
      ls_NAMETAB like line of NAMETAB.
data: FIELDS  type table of RFC_FIELDS,
      ls_fields like line of fields.
CALL FUNCTION 'RFC_GET_FUNCTION_INTERFACE'
  EXPORTING
    FUNCNAME                      = 'fm_test_fm'
  TABLES
    PARAMS                        = PARAMS
IF SY-SUBRC <> 0.
ENDIF.
loop at params into ls_params.
  CALL FUNCTION 'RFC_GET_NAMETAB'
    EXPORTING
      TABNAME                     = LS_PARAMS-TABNAME
    TABLES
      NAMETAB                     = NAMETAB
  IF SY-SUBRC <> 0.
  ENDIF.
  loop at NAMETAB into ls_NAMETAB.
    CALL FUNCTION 'RFC_GET_STRUCTURE_DEFINITION'
  EXPORTING
    TABNAME                     = LS_NAMETAB-ROLLNAME
  TABLES
    FIELDS                      = FIELDS
    loop at fields into ls_fields.
      write: ls_fields-FIELDNAME.
    endloop.
  endloop.
  endloop.