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Subject: Re: [ws-rx] namespace URI versioning policy

> * addition of new operations within a WSDL portType or binding (along with 
> the corresponding schema, message and part definitions)

The others examples seem okay to me, as they're effectively 
"subclassing" the current implementation -- the revisions wouldn't 
invalidate extant implementations.  But I'm much less comfortable with 
this item.  For example, a new operation could be defined that 
significantly changes the semantics, such as the ability to "withdraw" 
unacked messages.

I think one of the following changes must be made (in my decreasing 
order of preference):
	Add weasel-wording like "new operations that don't affect the
	semantics of operations already defined."
	Remove this item
	Define a distinguished "notImplemented" SOAP fault code.
	Add a "what operations do you support" operation.

Rich Salz, Chief Security Architect
DataPower Technology                           http://www.datapower.com
XS40 XML Security Gateway   http://www.datapower.com/products/xs40.html

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