[Koha] record does not exist when clicking title in search results

[Andrew Hartung]

Looking at the koha to marc mapping, 999c and d are ignored. 
How should I set them up in edit subfield constraints? I've tried but keep getting framework errors.

> Date: Wed, 20 Mar 2024 09:40:39 +0100
> From: Fridolin SOMERS <fridolin.somers at biblibre.com>

> Hi,
> 
> By default link will use MARC 999c (for MARC21).
> Do you have the biblionumber linked to this field ?
> 
> Le 20/03/2024 à 01:44, Andrew Hartung a écrit :
> > I'm still having problems with this.
> > In the catalog search results clicking on the title gives me a page:
> > 
> > "The record you requested does not exist()."
> > However, if I click on the pic of the book cover, if it has one, the record
> > displays fine.
> > I've ran koha-rebuild-zebra, batchRebuildBiblioTables.pl and 
> > batchRebuildItemsTables.pl.
> > 
> > All three give errors with some problem biblio records, which I have 
> > deleted, but they still show in the errors. Only rebuild-zebra actually 
> > completes, the other two crash.
> >