[ebxml-cppa] Ordering dependencies in negotiation

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

This is a reminder that we have not yet discussed the question of
dependencies in the order of negotiating items.

The negotiable items may not be able to be negotiated in an arbitrary order
because there may be dependencies among them that fix the order of
negotiation. Security aspects of some of the protocols may be one example.
Certificate details cannot be negotiated until it has been agreed that
certificate-based security will be used for message exchanges.   Any
ordering dependencies will have to be expressed in the NDD.  Ordering
dependencies also mean that a counter offer will omit items that cannot be
negotiated until after the items in that counter offer agre agreed to.

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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