Hi! (reposting from IRC, where I got warnocked): Can somebody help me setting up a Z39.50/SRU server config? We want to query https://services.dnb.de/sru/authorities, but I don't get any results, because it seems Zoom gets a 400 error (which is not reported to the UI) I assume that dnb.de returns a 400 BAD REQUEST, but I cannot figure out what request Koha is sending (and I don't want to dust off wireshark..) What exactly do I have to configure in z3950servers.pl to make dnb.de/sru/authorities work? It currently does not work using: Hostname: services.dnb.de Port: 443 Database: /sru/authorities Syntax: MARC21 Encoding: utf8 Record Type: Authority Additional SRU options: version=1.1,operation=searchRetrieve,recordSchema=MARC21-xml SRU Search fields mapping: EMPTY I also could not find any docs on how to set up Koha to query a SRU Server for authorities. We have a working config using Z3950 to query authorities at bsz-bw.de; and a working SRU config to query dnb.de for biblios, but this one uses an account and has some "SRU search field mappings". So my current guess is that the missing "SRU search field mappings" are causing the problem. Any hits would be appreciated! Greetings, Thomas -- #!/usr/bin/perl https://domm.plix.at for(ref bless{},just'another'perl'hacker){s-:+-$"-g&&print$_.$/}