Message id in BPM

Question

Hi,
I did all of Siva's steps
( Re: Retrieving a message id )
, then:
GlobalContainer globalContainer1 = container.getGlobalContainer();
String b = (String) globalContainer1.getParameter("mymessid");
result.addValue(b);
mymessid is a container variable from BPM
but in the mapping when I run my scanario it returns -> null (the container also doesn't have any Return - only when I assign senderservice I can see the container variable is filled but still in the transofmration I get null)
BTW
I assign messageid from the incomming message
(in a BPM of course)
any ideas?
Regards,
Michal
Message was edited by: Michal Krawczyk

Answer 1

Hi Michal,
We ran into the same issue and submitted an OSS Message about it. Here's the response from OSS:
it's a known issue.
when programming a mapping you must differenciate between two cases:
Will your mapping be executed on the BPE (business process engine) or
within an ordinary step on the integration server.
Due to the different functionality of the BPE (e.g. split/merge) some
parameters are not accessible and will not be evatuated there. This is a
behaviour that was designed that way.
if you are calling the mapping from the BPE engine, the MEssage ID
and other constants are not accessible. The BPE engine can
split/merge XI messages and then i makes no sense to correlate
the messages in the BPE engine  to any Message ID.
If you are executing the mapping
within an ordinary step on the integration server
all Mapping Runtime Constants mentioned in the document under
http://help.sap.com/saphelp_nw04/helpdata/
en/84/4afc51f65c4e4fabfbbbd25f548ab7/frameset.htm
->Design -> Designing Mappings-> Imported Archives (XSLT/Java)
->java mapping
are accessible.
A possible solution for your problem would be to map the MESSAGE ID
into the Xi payload before the XI message is transferred to the
BPE engine. In the BPE engine you can then read the MessageID
from the XI payload.
Thanks,
Jesse