Hi Hammat,
you probably already found this, but some information on the use and
config of the z3950-responder can be found here:
https://wiki.koha-community.org/wiki/Setting_up_the_Z39.50_and_SRU_Server
The original bug introducing it was:
*Bug 13937*
I believe, for Zebra, the file /etc/koha/zebradb/authorities/etc/bib1.att
maps attributes to indexes.
I don't know elasticsearch that well, so I can't say whether there is or
isn't a similar configuration there. Or even whether it's possible to do
that.
In the past it was deemed unfeasible to
