$u contains the link. The $z contains the text of the link. The example you showed only has one of each field. I would presume that the $z is populating with a default content of the URL unless you replace it with something else ("click here to access online resources" is a common thing, isn't it?) On Mon, Aug 25, 2025 at 4:22 AM Сычев Игорь Алексеевич <ias@tpu.ru> wrote:
Hi!
How can I disable the duplication of 856$z?
856 4 _u https://doi.org/10.18799/24131830/2025/7/4780 _z https://doi.org/10.18799/24131830/2025/7/4780
UNIMARC Koha 24.11.07
Good Luck!
Igor A. Sychev Tomsk Polytechnic University https://lib.tpu.ru _______________________________________________
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