How to set the status of an Workitem, while processing?

Question

Hi,
My requirement is to set/ Change the workitem status after/ while procecssing if certain condition is not met for all the users. I have one workitem assigned to multiple users. If any one of the user's executes the workitem, it displays a zprogram, but the user has not taken any action (SAVE), he simply came out of the transaction using "BACK" button. Here the Workitem has been vanished/disappeared from the other two users Inbox, and the workitem is in "In Processu201D Status for the User who executed the workitem. But my requirement is to set the workitem to be in "READY" status for all the users to whom the workitem is assigned; until the user "SAVE" the transaction I need the workitems to be in "READY" status only.
Please suggest me with your ideas to get the above results.
Note: I have used the function modules u201CSAP_WAPI_SET_WORKITEM_STATUS (or) SWW_WI_ADMIN_READY ", to change the status of the workitem while processing, it's throwing an error u201CWork item & locked by user & (enqueue erroru201D.
Thanks in advance,
Ajay Kumar

Answer 1

Thanks Florin,
Your piece of code has worked alot, and it was very helpful in changing the Status of the Workitem to "READY" for all the Users fo the workitem.
Points have been rewarded for your help.
Process: We have acheived this using the "Work Item Exits", Usng "AFTER_EXECUTION" Method.
Note: The Exit will be executed if "exit_cancelled"  statement is present/used in the work item method. if not it is not taking to the exit code. I'm unable to find the reason for it. Florin can u please explain this point.
Please check the link for adding the code in Work Item Exits.
http://wiki.sdn.sap.com/wiki/display/ABAP/ProgramExitsIn+Workflow
Please find the Code:
method IF_SWF_IFS_WORKITEM_EXIT~EVENT_RAISED.
Get the context of the workitem
  me->wi_context = im_workitem_context.
After execution of the workitem call the method AFTER_EXECUTION
  if im_event_name eq swrco_event_after_execution.
    me->after_execution( ).
  endif.
endmethod.
METHOD AFTER_EXECUTION.
This method acts as the Event Handler for SWRCO_EVENT_AFTER_EXECUTION
  DATA: LCL_L_WID TYPE SWW_WIID,
        L_STATUS TYPE SWR_WISTAT-STATUS,
        L_NEW_STATUS  TYPE SWR_WISTAT,
        L_SWR_MESSAG  TYPE STANDARD TABLE OF SWR_MESSAG,
        L_SWR_MSTRUC  TYPE STANDARD TABLE OF SWR_MSTRUC.
Get work item
  CALL METHOD WI_CONTEXT->GET_WORKITEM_ID
    RECEIVING
      RE_WORKITEM = LCL_L_WID.
  L_STATUS = 'READY'.
  CALL FUNCTION 'SAP_WAPI_SET_WORKITEM_STATUS'
    EXPORTING
      WORKITEM_ID    = LCL_L_WID
      STATUS         = L_STATUS
      USER           = SY-UNAME
      LANGUAGE       = SY-LANGU
      DO_COMMIT      = 'X'
    IMPORTING
      NEW_STATUS     = L_NEW_STATUS
     RETURN_CODE    = SY-SUBRC
    TABLES
      MESSAGE_LINES  = L_SWR_MESSAG
      MESSAGE_STRUCT = L_SWR_MSTRUC.
  IF SY-SUBRC EQ 0.
  ENDIF.
ENDMETHOD.
Thank You Once Again,
Ajay Kumar Chippa