I've seen this attribute mentioned on the uk fed site at: http://www.ukfederation.org.uk/content/Documents/AttributeUsage <http://www.ukfederation.org.uk/content/Documents/AttributeUsage> , but cannot seem to find anymore information about it - not even in the Sibboleth Wiki. Can anyone point in the direction of any documentation which exists about this attribute? I am testing with version 1.3.2 of the IdP software. Should PersistentIDAttributeDefinition be supported in this version? regards, Stephen ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System on behalf of the London Business School community. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________