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Subject: RE: [ebxml-msg] Interaction between AckRequested,DuplicateElimination,and SyncReply elements




From: Arvola Chan <arvola@tibco.com>
To: Doug Bunting <db134722@iPlanet.com>
Date: Wed, 27 Mar 2002 13:00:58 -0800






Doug:

In earlier versions of the spec when we had only the concept of Reliable
Messaging and not separate control of AckRequested and DuplicateElimination,
it was clear that whenever a receiver receives a reliably delivered message
that is not a duplicate, it is obligated to at least make a persistent copy
of the message ID as well as a persitent copy of the first response message.
When a received reliably delivered message is determined to be a duplicate,
the receiver is supposed to return the saved first response message.

Now that AckRequested and DuplicateElimination can be controlled separately,
it is not clear whether the behavior to save the first response message and
to return the saved first response message in reply to a duplicate message
is triggered by the AckRequested element or by the DuplicateElimination
element.

I would have preferred that the above behavior be triggered by the
DuplicateElimination element. However, Version 2.0 rev C indicates that the
above behavior should only be exhibited by the receiver MSH if the
AckRequested element is present.

Regards,
-Arvola