Hi Rachel, Newbie attempting to reply...
Greetings colleagues, yesterday I found a biblio record through Z39.50. It was for the e-book version (GMD "electronic resource") and I had the print version in hand. It had a the expected extra fixed fields and while I was at it, I checked the 000/leader. There I found that the encoding/position 9 stated UCS/Unicode. I'm fairly certain that we are using MARC-8/MARC21/USMARC.
These are two different things. MARC-8/MARC21/USMARC concerns the structure of your bibliographic record as a whole, so it says which fields contain what. UCS/Unicode refers to the way characters are represented in itles, author names, etc. UCS/Unicode seems a reasonable value.
Could this be the reason we are seeing "Error: Can't call method "as_usmarc" on an undefined value at /usr/share/koha/lib/C4/Search.pm line 2126" when searching the catalog?
That I don't know. If you have the record in a single file, perhaps you could try $ yaz-marcdump your file to see whether something wrong is detected ? My two cents, Sébastien.