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:bsz:291-saardok-zdb2444366-90
	https://saardok.sulb.uni-saarland.de/frontdoor/index/index/docId/urn:nbn:de:bsz:291-saardok-zdb2444366-90 STATUS : 404 → Skipping : https://saardok.sulb.uni-saarland.de/frontdoor/index/index/docId/urn:nbn:de:bsz:291-saardok-zdb2444366-90

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