Dear all, I have just uploaded to BZ a big update of the original UNIMARC->MARC21 xsl that was currently available. You may find the file in the appropriate BZ case (https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=16488) and test it for yourself. You must copy the file to koha-tmpl/intranet-tmpl/prog/en/xslt/ And then put "UNIMARC2MARC21.xsl" in "XSLT File(s) for transforming results:" textfield of a UNIMARC Z39.50 source that you wish to translate to MARC21 The new version has better handling of Unimarc-100 (MARC21-008) field, and supports the translation of far more UNIMARC fields. Almost all of the code was based on the (almost 15-year-old!) conversion guidelines by LOC, so some fields/subfields might now be deprecated. Even worse, important new fields might be missing from the translation. (856 field was such an example, so by reading more recent docs, I think I translated it properly). Warnings: - The work is nowhere near complete, but it's better (and more complete) that what was currently available online. - My knowledge of UNIMARC is very-very limited. - The xsl was not thoroughly tested and the time I had to spend on it was limited. Expect to find errors :) Known issues: Although the xsl /seems/ to work fine for me, there are certain encoding issues when using it to IMPORT utf8 UNIMARC records to Koha. Displaying of UTF8 records in the Koha Z39.50 result list is OK, but importing them to cataloging is not. It's possible that it's an issue of Koha code and not related to this xsl. (I will open a BZ case soon). Best regards, Theodoros Theodoropoulos