The first para seems to be conflicting whats stated in the second para.
Multiple Ports on an Endpoint
When input messages destined for two different wsdl:ports at the same network endpoint are indistinguishable on the wire, it may not be possible to determine the wsdl:port being invoked by them. This may cause interoperability problems. However, there may be situations (e.g., SOAP versioning, application versioning, conformance to different profiles) where it is desirable to locate more than one port on an endpoint; therefore, the Profile allows this.
R271 A DESCRIPTION SHOULD NOT have more than one wsdl:port with the same value for the location attribute of the soapbind:address element.
Two port definitons CANNOT have soap:address location attribute under any circumstance, am I right? Why does the first para indicate that the WS-I does allow it? So what is conformant and what isnt???