Triggering a workflow from a function module

[Hans Brilleman]

Hi,
 
I am trying to trigger a workflow from a function module. The building
of the container elements seems fine, but the triggering of the event
using SWE_EVENT_CREATE is not so succesfull. It gives an inconsistent
error regarding the requester. If I then export a value of X in the
field take_workitem_requester, it is happy (which I do not understand as
it seems that generally it defaults with a space and is not a mandatory
field for passing a specific value). BUT - now  receiverid (or RECID)
stating that it is invalid. I have tried for testing purposes to
populate the container element _EVT_RECEIVER_ID  with a value of
WF-BATCH. It worked for a while, but now all of a sudden it does not
anymore and gives the error again. Could anybody give me a idea of what
the purpose of this element is, and what the values are that the event
creation requires.
 
Below see a extract of my  program code.
 
        SWC_CREATE_OBJECT INSTLN 'INSTLN' Z_ANLAGE.
        SWC_SET_ELEMENT CONTAINER 'instln' INSTLN.
        SWC_SET_ELEMENT CONTAINER 'CSRID' SY-UNAME.
        SWC_SET_ELEMENT CONTAINER 'MoveOutDoc' Z_MOVEOUT_DOCUMENT.
        SWC_SET_ELEMENT CONTAINER '_EVT_RECEIVER_ID' 'WF-BATCH'.
 
        objtype = 'MOVEOUTDOC'.
        objkey  = Z_MOVEOUT_DOCUMENT.
        event   = 'MODisconnect'.
 
        call function 'SWE_EVENT_CREATE'
             EXPORTING
                  objtype                 = objtype
                  objkey                  = objkey
                  event                   = event
                  take_workitem_requester = 'X'
             TABLES
                  event_container         = CONTAINER
             EXCEPTIONS
                  objtype_not_found       = 1
                  others                  = 2.
 
Thanks,
 
Hans Brilleman