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:hbz:468-20200618-090700-4
	http://elpub.bib.uni-wuppertal.de/servlets/DerivateServlet/Derivate-9917/dej20090104.pdf STATUS : 302 → Redirecting to : https://elpub.bib.uni-wuppertal.de/servlets/DerivateServlet/Derivate-9917/dej20090104.pdf
	https://elpub.bib.uni-wuppertal.de/servlets/DerivateServlet/Derivate-9917/dej20090104.pdf STATUS : 404 → Skipping : https://elpub.bib.uni-wuppertal.de/servlets/DerivateServlet/Derivate-9917/dej20090104.pdf
	http://d-nb.info/1219002402/34 STATUS : 301 → Redirecting to : https://d-nb.info/1219002402/34
	https://d-nb.info/1219002402/34 Success. Document available.

Please contact us if you experience any errors with the URN.