BPS variables and API_SEMBPS_GETDATA

Question

Hi, everybody!
I've faced with the following issue.
I have two planning levels. I have three variables: ZVPYEAR "Year of planning" (based on 0CALYEAR),
ZVPRESP "Responsible person" (based on ZRESP) and ZVPWBS "WBS-element" (based on 0WBS_element), as well.
Data in the plevel1 is restricted by variable ZVPYEAR and presented like this:
0WBS_ELEMENT 0CALYEAR 0RESP_PERSON 0START_DATE 0FINISH_DATE
        WBS1     2006        RESP1  01/01/2006   12/31/2006
        WBS2     2006        RESP1  03/01/2006   05/31/2006
        WBS3     2006        RESP2  04/01/2006   07/31/2006
        WBSN     2006        RESP3  08/01/2006   12/31/2006
Data in the plevel2 is restricted by variable ZVPYEAR, ZVPRESP and ZVPWBS. Moreover, list of available WBS-elements for
ZVPWBS I read from plevel1 using the following FM.
FUNCTION ZMZ_WBS_LOAD.
*"  IMPORTING
*"     VALUE(I_AREA) TYPE  UPC_Y_AREA
*"  EXPORTING
*"     REFERENCE(ETO_CHARSEL) TYPE  UPC_YTO_CHARSEL
  DATA: area      TYPE  upc_y_area             VALUE 'PAREA',
        plevel    LIKE  upc_plevel-plevel      VALUE 'PLEVEL',
        package   LIKE  upc_package-ppackage   VALUE 'PPACKAGE',
        layout    LIKE  upp_param-param        VALUE 'PLAYOUT',
        read_only LIKE  upp_ys_flags-read_only VALUE 'X'.
  DATA: res LIKE sy-subrc,
        res_mess TYPE bapiret2 OCCURS 0.
  DATA: lt_head  TYPE upc_ys_api_head OCCURS 0,
        ls_head  TYPE upc_ys_api_head,
        lt_col   TYPE upc_ys_api_col  OCCURS 0,
        ls_col   TYPE upc_ys_api_col,
        lt_row   TYPE upc_ys_api_row  OCCURS 0,
        ls_row   TYPE upc_ys_api_row,
        lt_rates TYPE upc_ys_api_data OCCURS 0,
        ls_rates TYPE upc_ys_api_data.
  DATA: ls_varsel TYPE upc_ys_charsel.
  DATA: BEGIN OF lt_select OCCURS 0,
        /BIC/ZWBS  TYPE /BIC/OIZWBS,
  END OF lt_select.
  DATA: ls_select LIKE LINE OF lt_select.
  DATA: lr_variable TYPE REF TO cl_sem_variable.
  DATA: lt_values   TYPE upc_yto_charsel.
  DATA: ls_values   LIKE LINE OF lt_values.
  CLEAR lt_values[].
  FREE lr_variable.
reading data from planning level
  CALL FUNCTION 'API_SEMBPS_GETDATA'
    EXPORTING
      i_area      = area
      i_plevel    = plevel
      i_package   = package
      i_layout    = layout
      i_read_only = read_only
    IMPORTING
      e_subrc     = res
    TABLES
      etk_head    = lt_head
      etk_row     = lt_row
      etk_col     = lt_col
      etk_data    = lt_rates
      etk_return  = res_mess.
  IF sy-subrc <> 0.
   RETURN.
  ENDIF.
getting value of ZVPRESP
  CALL METHOD cl_sem_variable=>get_instance
    EXPORTING
      i_area       = area
      i_variable   = 'ZVPRESP'
    RECEIVING
      rr_variable  = lr_variable
    EXCEPTIONS
      not_existing = 1
      OTHERS       = 2.
  IF sy-subrc <> 0.
    RETURN.
  ENDIF.
  CALL METHOD lr_variable->get_value
    EXPORTING
      i_user     = sy-uname
      i_restrict = 'X'
    RECEIVING
      rto_value  = lt_values
    EXCEPTIONS
      error      = 1
      OTHERS     = 2.
  IF sy-subrc <> 0.
    RETURN.
  ENDIF.
restrict WBS according to selected variable ZVPRESP
  LOOP AT lt_values INTO ls_values.
    AT NEW low.
    SELECT /BIC/ZWBS FROM /BIC/PZWBS
                           INTO ls_select-/BIC/ZWBS
                           WHERE /BIC/ZRSPNS = ls_values-low.
     IF sy-subrc = 0.
      APPEND ls_select TO lt_select.
     ENDIF.
    ENDSELECT.
    ENDAT.
  ENDLOOP.
    IF lt_select[] IS INITIAL.
     RETURN.
    ENDIF.
returns available WBS-eleemnts
    SORT lt_row BY chavlext.
    ls_varsel-seqno = '0000'.
    ls_varsel-chanm = 'ZWBS'.
    ls_varsel-sign  = 'I'.
    ls_varsel-opt   = 'EQ'.
    LOOP AT lt_row INTO ls_row.
      AT NEW chavlext.
       READ TABLE lt_select
            INTO  ls_select
            WITH KEY  /BIC/ZWBS = ls_row-chavlext.
        IF sy-subrc = 0.
          ls_varsel-seqno = ls_varsel-seqno + 1.
          ls_varsel-low = ls_row-chavlext.
          APPEND ls_varsel TO eto_charsel.
        ENDIF.
      ENDAT.
    ENDLOOP.
ENDFUNCTION.
At the first time everything works fine. But, when I try to change value of ZVPYEAR or ZVPRESP,
list of available values of WBS-elements for ZVPWBS is returned empty.
Perhaps, I should to add something in my FM?
I use
Softw. comp. |Release   |Level |Highest SP          |Description
--------++--
SAP_BASIS    |620       |0055  |SAPKB62055          |SAP Basis Component
SAP_ABA      |620       |0055  |SAPKA62055          |Cross-Application Component
SAP_BW       |310       |0022  |SAPKW31022          |Business Information Warehouse
PI_BASIS     |2004_1_620|0010  |SAPKIPYI5A          |Basis Plug-In (PI_BASIS) 2004_1_620
FINBASIS     |200       |0018  |SAPK-20018INFINBASIS|FINBASIS 200: Add-on installation reques
BI_CONT      |330       |0017  |SAPKIBICQ7          |Business Intelligence Content
SEM-BW       |350       |0018  |SAPKGS3518          |SEM-BW 3.2 : Installation.

Answer 1

Hi,
Before going through your coding, could you check following first:
Are you using web or GUI?
If you are using web, you can set that Var: ZVPYEAR or ZVPRESP shall be refreshed after change of certain variable.
Check out also, if there is entry in table UPC_DARK2 whether  the variable buffer is set (PARAM = 'VAR_BUFFER' VALUE = 'X' ?? )!
check also following notes:
720265, 888016, 629775.
Best Regards,
Suan Liono