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For ADFS Toolkit, you can also look at the HARICA section at Manual attribute releases with ADFS Toolkit and for Shibboleth at How-To - SAML-konfiguration Sunet TCS
We recommend that you use the STAGING environment for testing basic attribute release, user creation/login etc as that database is not shared with the production environment so you will not interfere with existing users. When it works there, you can enable it for PRODUCTION as well.
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