With this function, the resolver checks all associated URLs and marks them either with a green tick or, in the event of an error, with a red cross. Users are redirected to the first URL marked in green.

Analyse	urn:nbn:de:hebis:30:4-137292
	https://sammlungen.ub.uni-frankfurt.de/urn/urn:nbn:de:hebis:30:4-137292 RESTEASY004655: Unable to invoke request: javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

Please contact the responsible organisation if you experience any errors with the URLs.