[ebxml-cppa-negot] Hima'sNegotiation BPSS Instance

[Martin W Sachs <mwsachs@us.ibm.com>]

The Negotiation BPSS instance contains two Binary Collaborations, each with
a Start element.  I can't find anything that unambiguously specifies that
the choreography begins with the "CPA Offer BTA"  business transaction
activity under the "CPA_Negotiation_BC" binary collaboration. As far as I
can tell, it might equally well begin with the "CPA Counter Offer 1 BTA"
business transaction acvitity uner the "CPA Negotiation CounterOfferBC"
binary collaboration.

Of course, we all know from the semantics of what we are doing that  the
"CPA Offer BTA" business transaction activity has to start things off, but
a BPSS deployment tool won't know that.  What determines where the
choreography actually begins when there is more than one binary
collaboration in the instance document?

I suspect that the BPSS designers intended that each binary collaboration
be independent, with its own choreography.  If I am right, we are violating
that assumption because the two binary collaborations in this instance
document are very definitely connected into a single choreography.

Regards,
Marty

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Martin W. Sachs
IBM T. J. Watson Research Center
P. O. B. 704
Yorktown Hts, NY 10598
914-784-7287;  IBM tie line 863-7287
Notes address:  Martin W Sachs/Watson/IBM
Internet address:  mwsachs @ us.ibm.com
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