Using bib entries exported from http://adsabs.harvard.edu sometimes the field archivePrefix is missing. One example is this paper: http://adsabs.harvard.edu/abs/2003A%26A...410..389R
As a result of the missing prefix, the hyperlink to the preprint is build incorrectly and does not work.
Of course I could add it manually each time, but as this effects roughly 20% of the ADS preprints (based on the limited and maybe biased survey of papers I cite in my work) I'd like to have some workaround.
biblatexarchivePrefixis an alias foreprinttype, so you could also seteprinttypetoarxivif you wanted. – moewe Aug 12 '17 at 18:42eprinttype, as this field is ultimately called when glueing together the link, but as I could not find any different behaviour I thoughtarchivePrefixto be more intuitive as this is what ADS normally exports - but if there is a real difference I would gladly change this. – samcarter_is_at_topanswers.xyz Aug 12 '17 at 19:07archivePrefixtoeprinttypeso they are equivalent. I prefereprinttypebecausearchivePrefixis the alias, andeprinttypeis what the bibmacros actually use. But it makes sense to usearchivePrefixif that is what ADS normally uses and is missing here. – moewe Aug 13 '17 at 13:27