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:101:1-2410201131099.617514952181
	https://portal.dnb.de/bookviewer/view/1341694194 STATUS : 403 → Skipping : https://portal.dnb.de/bookviewer/view/1341694194

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