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                                                    <td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0px; border-collapse: collapse; padding: 0 0 10px 0"> <p style="margin: 10px 0 0 0; margin-top: 0">An <tt><Attribute></tt> without a <tt>NameFormat</tt> is equivalent to setting <tt>nameFormat</tt> to <tt>urn:oasis:names:tc:SAML:2.0:attrname-format:unspecified</tt>, which means that "the interpretation of the attribute name is left to individual implementations", so all bets are off in terms of required behaviour. It's possible that our behaviour has changed, but I don't offhand recall any intention to do that.</p> <p style="margin: 10px 0 0 0">Personally, I'd expect such an attribute specification to simply not match any properly-specified attribute (which seems to be what you're observing), and indeed the UK federation doesn't allow you to omit <tt>NameFormat</tt> in metadata to avoid interoperability issues. However, I have a vague recollection that some products have interpreted it as "matches anything", on the basis that so many people get this wrong.</p> </td> 
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