$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 $z is
populating with a default content of the URL unless you replace it with
something else ("click here to access online resources" is a common thing,
isn't it?)
On Mon, Aug 25, 2025 at 4:22 AM Сычев Игорь Алексеевич <[email protected]> wrote:
> Hi!
>
> How can I disable the duplication of 856$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
> _______________________________________________
>
> Koha mailing list http://koha-community.org
> [email protected]
> Unsubscribe: https://lists.katipo.co.nz/mailman/listinfo/koha
>
--
Trevor Diamond
Director of Library Systems
Main Library Alliance
Cedar Knolls, NJ
<https://mainlib.org/>
_______________________________________________
Koha mailing list http://koha-community.org
[email protected]
Unsubscribe: https://lists.katipo.co.nz/mailman/listinfo/koha
