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Note: This implementation is meant as a reference or backup. Identity Providers are encouraged to implement their own branded error page to provide clearer, institution-specific guidance to users.

Table of Contents

Overview

The error page:

• Shows localized error messages (Swedish by default, English toggle)

• Accepts context parameters from SPs to provide technical detail

• Presents users with understandable instructions

• Offers an expandable technical diagnostics section

• Complies with the REFEDS ErrorURL v1 specification

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• IDENTIFICATION_FAILURE: List of missing attributes or entity category URIs

• AUTHENTICATION_FAILURE: List of required authentication context/classref values (e.g., time, loa2)

• AUTHORIZATION_FAILURE: Short policy description of why access was denied

• OTHER_ERROR: Brief technical description useful for troubleshooting

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