[Koha] Koha reindex with Zebra doesn't work

[Frédéric Demians]

Alex, you have to find out why Zebra can't find Koha record unique
identifier (biblionumber) in your biblio records.

Use rebuild_zebra.pl and ask to keep exported records:

   ./rebuild_zebra.pl -r -b -x -k -d ./

In the current directory, you will have a 'biblio' subdirectory containing
exported biblio records. Look at them:

   less biblio/exported_records

One field must contain biblionumber. Is it conform to you record.abs
Zebra configuration file?