Why are 'exporting' parameters NOT passed back from an OO method to the workflow?

[Florin Wach]

hrm.

It seems to be okay under SAP ECC 6.00 SAP Basis 700 Patch Level 17
On this release I can't find anything particular that filters any export-parameters. Furthermore I have a workflow tasks having two export parameters (one table and one simple) and both worked fine.

What's *not* implemented currently is, to have the RESULT-Parameter with fixed domain values giving different outcomes of the activity when modelling the workflow pattern.

Best wishes,
   Florin

-------- Original-Nachricht --------
> Datum: Wed, 11 Mar 2009 16:57:00 +1000
> Von: Neil Gardiner <neil.gardiner at gmail.com>
> An: "SAP Workflow Users\' Group" <sap-wug at mit.edu>
> Betreff: Re: Why are \'exporting\' parameters NOT passed back from an OO method 	to the workflow?

> Hi Paul,
> 
> This is currently a feature of workflow in OO but currently there seems to
> be no clear reason for this. Unless, Jocelyn et al, I am mistaken?
> 
> Cheers,
> Neil.
> 2009/3/11 <Paul.Bakker at osr.treasury.qld.gov.au>
> 
> >
> > Hi,
> >
> > I have a simple question:
> >
> >   Why are 'exporting' parameters NOT passed back from an OO method call
> to
> > the workflow?
> >
> > We have this setup:
> >
> > A custom OO method exports table ET_MESSAGES -> binds to Task container 
> ->
> > binds to Workflow container
> >
> > The problem: the method is populating ET_MESSAGES, but it
> > is NOT being passed back to the task (or the workflow). So the workflow
> log
> > cannot tell us whether the method succeeded or not.
> >
> > In debug I found out the reason why. The SAP function module
> > SWF_UTL_INVOKE_CLIF_METHOD seems to be checking all method
> > parameters, and passing back only those that are of type
> > 'RETURNING'.
> >
> > Whereas my parameter ET_MESSAGES is of type 'EXPORTING'.
> >
> > When I change it to 'RETURNING', it works.
> >
> > Is this a bug or a feature? Or am I doing something wrong??
> >
> > thanks in advance!
> > Paul
> >
> > (PS We're on ECC 6.0. I have searched OSS and WUG but found nothing. SDN
> is
> > down.)
> >
> >
> >
> >
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> Neil Gardiner
> Mob: +61 421 451 295