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Case 1. If both the sp_entityID and idp_entityID parameters are included in the query string, the Error Handling Service constructs a simple SP-branded error page from user interface elements in SP metadata. A link to the IdP’s Error Handling URL is included in the body of the error page and the user is encouraged to visit this page at the IdP for further instructions.

Example 1: https://ds.incommon.org/FEH/sp-error.html?sp_entityID=https%3A%2F%2Fcilogon.org%2Fshibboleth&idp_entityID=urn%3Amace%3Aincommon%3Aosu.edu^{Image Removed}

Case 2. If both the return and idp_entityID parameters are included in the query string, the Error Handling Service will determine the Error Handling URL (errorURL) of the given IdP and then redirect the client to the return URL with the errorURL included in the query string. If the IdP has no errorURL in metadata, the client is simply redirected to the return URL without any additional information.

Example 2: https://ds.incommon.org/FEH/sp-error.html?return=http%3A%2F%2Fwww.incommon.org%2F%3Ffoo%3Dbar&idp_entityID=urn%3Amace%3Aincommon%3Aosu.edu^{Image Removed}

Visit the Federated Error Handling (FEH) Service home page to determine the service URLs for arbitrary parameter values.

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