The Warwick External Users system is located at https://ext-users.warwick.ac.uk/. It's a system where people can add users which can then be found in Single Sign-on.

See more information about external user codes.

Users from this user source come back with the following attributes specific to this source:

urn:websignon:usersource=WarwickExtUsers
urn:mace:dir:attribute-def:eduPersonScopedAffiliation=affiliate@warwick.ac.uk
urn:mace:dir:attribute-def:eduPersonAffiliation=affiliate