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The html page hosting the EDS has to include a named <div> and that name should be passed to the EDS code.
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<div
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id="idpSelect">
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This error indicates that name supplied in the idp_config.js file does not exist.
fatal.noData
Text: Metadata download returned no data.
This error indicates that the XMLHttpRequest get returned no data at all. It it more likely to be browser deficiency than a configuration one.
fatal.loadFailed
Text: Failed to download metadata from 'SourceURL'
This indicates that the JSON source could not be located at the supplied location. This will usually mean an incorrectly specified dataSource.
fatal.noXMLHttpRequest
Text: Browser does not support XMLHttpRequest, unable to load IdP selection data
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Text: No URL return parameter provided
Some port of the Discovery Protocol was supplied to the EDS, but this did not include a return address.
fatal.badReturnString 1.2.1
Text: Return parameter is not whitelisted
The return address supplied was not permitted based on the configured set of allowable locations.