Data Type Is Not Vailid for Input

Question

Hello,
I'm new in (ABAP) WebDynpro and I have a problem with displaying data - particularly with HROBJECTs from our e-Recruiting system.
In my WebDynpro-Component i read some data of candidates into my context. One table (with candidate-infos) which i save in my context includes a field which is datatype of HROBJECT. After I've read this infos into my itab, I bind this table to my context. All this works fine! But as soon as I bind this context to a table-ui-element in my layout, i get a error message "Data Type Is Not Valid for Input", when i start the application.
If I delete the binding with the attribute which is a HROBJECT, it works.
Runtime Errors         UNCAUGHT_EXCEPTION
Exception              CX_WDR_CONVERSION_EXCEPTION
Information on where terminated
    Termination occurred in the ABAP program "CL_WDR_CONVERSION_UTILS=======CP" -
     in "IF_WD_CONVERSION_UTILS~TO_STRING".
    The main program was "SAPMHTTP ".
    In the source code you have the termination point in line 138
    of the (Include) program "CL_WDR_CONVERSION_UTILS=======CM00G".
    The termination is caused because exception "CX_WDR_CONVERSION_EXCEPTION"
     occurred in
    procedure "IF_WD_CONVERSION_UTILS~TO_STRING" "(METHOD)", but it was neither
     handled locally nor declared
    in the RAISING clause of its signature.
    The procedure is in program "CL_WDR_CONVERSION_UTILS=======CP "; its source
     code begins in line
    1 of the (Include program "CL_WDR_CONVERSION_UTILS=======CM00G ".
136     WHEN cl_abap_typedescr=>typekind_struct1    "'u'     " structure
137     OR   cl_abap_typedescr=>typekind_struct2.   "'v'.    " structure
>>>>       RAISE EXCEPTION TYPE cx_wdr_conversion_exception exporting textid = cx_wdr_conversion_
139 *      raise exception type cx_wdr_conv_unsupported exporting type_name = l_type.
Please Help.
Thanks

Answer 1

now i've tried it with a independent candidate node (without) supply funciton. =>
The same error: "Data Type Is Not Vailid for Input"
Here's the code of my supply-function:
(probably not the best coding - but it works until i want to display a hro.)
METHOD get_cand_info .
  DATA: lr_cdcy                    TYPE REF TO cl_hrrcf_candidacy_bl,
        lr_cand                    TYPE REF TO cl_hrrcf_candidate_bupa_bl,
        stru_requisitions          TYPE if_componentcontroller=>element_requisitions ,
        lt_h_cdcy_list             TYPE rcf_t_list_candidacies_x,
        ls_h_cdcy_list             TYPE rcf_s_list_candidacies_x,
        lt_cdcy_list               TYPE if_componentcontroller=>elements_candidate,
        ls_cdcy_list               TYPE if_componentcontroller=>element_candidate,
        lt_addr                    TYPE rcf_t_addressdata_bp,
        ls_addr                    TYPE rcf_s_addressdata_bp,
        lt_email                   TYPE rcf_t_emaildata_bp,
        ls_email                   TYPE rcf_s_emaildata_bp.
* get all declared attributes
  parent_element->get_static_attributes(
    IMPORTING
      static_attributes = stru_requisitions ).
  CALL METHOD cl_hrrcf_candidacy_bl=>get_instance
    RECEIVING
      return = lr_cdcy.
  CALL METHOD cl_hrrcf_candidate_bupa_bl=>get_instance
    RECEIVING
      return = lr_cand.
* Hole Kandidatur-Informationen der Kandidaten
  TRY.
      lr_cdcy->get_candidacy_list_x(
        EXPORTING
          ps_req_hrobject  = stru_requisitions-hrobject
*    ps_cand_hrobject =
*    ps_appl_hrobject =
*    p_exclude_draft  = 'x'
        IMPORTING
          pt_candidacies_x = lt_h_cdcy_list
    CATCH cx_hrrcf .
  ENDTRY.
* Ergänzen der Informationen mit BusinessPartner-Infos
  LOOP AT lt_h_cdcy_list INTO ls_h_cdcy_list.
    TRY.
        lr_cand->get_contact_data(
          EXPORTING
            ps_cand_hrobject = ls_h_cdcy_list-cand_hrobject
          IMPORTING
            pt_addressdata   = lt_addr
*    pt_telefondata   =
*    pt_faxdata       =
            pt_emaildata     = lt_email
      CATCH cx_hrrcf .
    ENDTRY.
    READ TABLE lt_addr INDEX 1 INTO ls_addr.
    READ TABLE lt_email INDEX 1 INTO ls_email.
    MOVE-CORRESPONDING ls_h_cdcy_list TO ls_cdcy_list.
    ls_cdcy_list-postcode1 = ls_addr-postl_cod1.
    ls_cdcy_list-city1 = ls_addr-city.
    ls_cdcy_list-email = ls_email-e_mail.
    APPEND ls_cdcy_list TO lt_cdcy_list.
  ENDLOOP.
  CALL METHOD node->bind_table
    EXPORTING
      new_items = lt_cdcy_list.
ENDMETHOD.