Webflow step - error "XML tag <ProcessInstanceKey> not available"

[Rankin, Andrew]

Hi,

 

I am working on a webflow scenario that integrates a process between two
SAP systems -being R/3 Enterprise and SRM 4.0. The idea is that a
workflow in started in R/3 when an invoice is held. It collects various
pieces of information then starts a corresponding workflow in SRM using
a webflow activity, and should then wait until the SRM workflow is
complete. The SRM workflow will request creation of a service
confirmation to an agent. Once this is complete, the SRM workflow ends
and the R/3 workflow will continue from there.

 

Because I haven't worked with the webflow step before, I started by just
creating a simple example. In the example, an R/3 workflow fills a
container element with the value of a user-id and passes it to an SRM
workflow which sends an email to this user. A reference workflow is
created with the same container element. I just wanted to see the
process working so I know how to write up a spec for the real workflow
scenario mentioned above and be sure that it is going to work!

 

I have the example working to the point where the initiating R/3
workflow successfully sends the wf-xml message to the SRM system, which
starts the SRM workflow (passing the container value of my user-id
correctly). The SRM workflow completes ok. But before anything else can
happen, the R/3 workflow goes into error. The error message is "XML tag
<ProcessInstanceKey> not available". When I checked the request /
response messages (with transaction SWXML), this is what the
"CreateProcessInstance.Request (received response)" looks like:

 

<?xml version="1.0" ?> 

- <WfMessage Version="1.1"
xmlns="http://www.wfmc.org/standards/docs/Wf-XML">

- <WfMessageHeader>

  <Response /> 

 
<Key>HTTP://stlmelhsapd.stlmel.bsl.net:8002/SAP/BC/WORKFLOW_XML/?~protoc
ol=04&~localkey=WS90200001</Key> 

  </WfMessageHeader>

- <WfMessageBody>

- <CreateProcessInstance.Response>

  <ProcessInstanceKey /> 

  </CreateProcessInstance.Response>

  </WfMessageBody>

  </WfMessage>

 

So it seems like the response from SRM is not being correctly formed
when it responds to the initial request from R/3.

I found a message previously in this group which suggested that it might
be an authentication problem. I tried using an authentication rule in
the header of the SRM workflow (passing a user and password to it) but
it didn't make any difference. Does anyone have any idea what is going
wrong or what I should check?

Thankyou!

 

Kind Regards,

Andrew Rankin

+61 0437991735

 



EOM

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