Chris:
Please see my response to Bruce Pedretti:
http://lists.oasis-open.org/archives/ebxml-msg/200111/msg00277.html
I was trying to let the CPA provide the guidance to the sending MSH whether
it should include an AckRequested element in the SOAP header, should the
application omit the specification of whether it wants an AckRequested
element to be constructed, and the two parties have agreed that this
property is "perMessage" rather than "fixed"
Similarly, I was trying to provide a default value for duplicateElimination
should the application not specify a value for this attribute, and the two
parties have agreed that this attribute is "perMessage".
Regards,
-Arvola