[wsrp-wsia] [I#174] The Consumer SHOULD NOT assert a role for a rolewhich th e Producer does not have

Issue: 174
Status: Active
Topic: 
interface
Class: Minor_Technical
Raised by: Eilon Reshef
Title: The 
Consumer SHOULD NOT assert a role for a role which the Producer does not 
have
Date Added: 10-Dec-2002
Document Section:   
v0.85/4.1.6
Description:
"The Consumer ""MUST NOT"" assert a role for 
which no RoleDescription was part of the Producer's ServiceDescription. This 
should be a ""SHOULD NOT"" because changes to the service description can happen 
arbitrarily and we can't require Consumers to validate that the service 
description hasn't changed before each operation invocation.
alternative 
would be to add verbiage to the effect that the Consumer MUST NOT assert a role 
the Producer has not said it supports. The Producer SHOULD be prepared to 
receive a role it does not currently support as it may have existed in a 
previous service description. The Consumer is not required to get a current 
snapshot all the time, but must abide by the snapshot it 
has."