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:30:3-281671
	http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/28167 STATUS : 429 → Skipping : http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/28167
	http://publikationen.ub.uni-frankfurt.de/files/28167/Veroeffentlichung_NF_Rechtsw.pdf STATUS : 429 → Skipping : http://publikationen.ub.uni-frankfurt.de/files/28167/Veroeffentlichung_NF_Rechtsw.pdf
	http://d-nb.info/1079597581/34 STATUS : 301 → Redirecting to : https://d-nb.info/1079597581/34
	https://d-nb.info/1079597581/34 STATUS : 404 → Skipping : https://d-nb.info/1079597581/34

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