This should work: Administration --> MARC bibliographic framework --> Default framework (or the framework you want to modify) --> Actions/MARC structure --> Search for tag 856 --> Actions/Edit subfields --> (choose field z) --> click on Repeatable to remove the check mark. Actions is a button you click on to choose what you want to do. Hope this works! And that it makes sense. --Fred Fred King, MSLS, AHIP; he, him Medical Librarian, MedStar Washington Hospital Center fred.king@medstar.net 202-877-6670 ORCID 0000-0001-5266-0279 MedStar Authors Catalog: http://medstarauthors.org It is a sobering thought that when Mozart was my age, he had been dead for two years. --Tom Lehrer (1928-2025) From: Koha <koha-bounces@lists.katipo.co.nz> On Behalf Of Сычев Игорь Алексеевич Sent: Monday, August 25, 2025 4:22 AM To: koha@lists.katipo.co.nz Subject: [EXTERNAL] [Koha] Duplicat 856$z Hi! How can I disable the duplication of 856$z? 856 4 _u https: //urldefense. com/v3/__https: //doi. org/10. 18799/24131830/2025/7/4780__;!!D7IIWT94AA!-gE7h-vS2Ns52YvTVq1jN-603ADRMwBN_XoajgedGAPKMPiZsc3lPfk9mumIZF5sTexDnlOcu-uG$[doi[. ]org] _z https: //urldefense. com/v3/__https: //doi. org/10. 18799/24131830/2025/7/4780__;!!D7IIWT94AA!-gE7h-vS2Ns52YvTVq1jN-603ADRMwBN_XoajgedGAPKMPiZsc3lPfk9mumIZF5sTexDnlOcu-uG$[doi[. ]org] Hi! How can I disable the duplication of 856$z? 856 4 _u https://urldefense.com/v3/__https://doi.org/10.18799/24131830/2025/7/4780__;!!D7IIWT94AA!-gE7h-vS2Ns52YvTVq1jN-603ADRMwBN_XoajgedGAPKMPiZsc3lPfk9mumIZF5sTexDnlOcu-uG$<https://urldefense.com/v3/__https:/doi.org/10.18799/24131830/2025/7/4780__;!!D7IIWT94AA!-gE7h-vS2Ns52YvTVq1jN-603ADRMwBN_XoajgedGAPKMPiZsc3lPfk9mumIZF5sTexDnlOcu-uG$>[doi[.]org] _z https://urldefense.com/v3/__https://doi.org/10.18799/24131830/2025/7/4780__;!!D7IIWT94AA!-gE7h-vS2Ns52YvTVq1jN-603ADRMwBN_XoajgedGAPKMPiZsc3lPfk9mumIZF5sTexDnlOcu-uG$<https://urldefense.com/v3/__https:/doi.org/10.18799/24131830/2025/7/4780__;!!D7IIWT94AA!-gE7h-vS2Ns52YvTVq1jN-603ADRMwBN_XoajgedGAPKMPiZsc3lPfk9mumIZF5sTexDnlOcu-uG$>[doi[.]org] UNIMARC Koha 24.11.07 Good Luck! Igor A. Sychev Tomsk Polytechnic University https://urldefense.com/v3/__https://lib.tpu.ru__;!!D7IIWT94AA!-gE7h-vS2Ns52YvTVq1jN-603ADRMwBN_XoajgedGAPKMPiZsc3lPfk9mumIZF5sTexDnk4dSR8o$<https://urldefense.com/v3/__https:/lib.tpu.ru__;!!D7IIWT94AA!-gE7h-vS2Ns52YvTVq1jN-603ADRMwBN_XoajgedGAPKMPiZsc3lPfk9mumIZF5sTexDnk4dSR8o$>[lib[.]tpu[.]ru] _______________________________________________ Koha mailing list https://urldefense.com/v3/__http://koha-community.org__;!!D7IIWT94AA!-gE7h-vS2Ns52YvTVq1jN-603ADRMwBN_XoajgedGAPKMPiZsc3lPfk9mumIZF5sTexDnukB-6kI$<https://urldefense.com/v3/__http:/koha-community.org__;!!D7IIWT94AA!-gE7h-vS2Ns52YvTVq1jN-603ADRMwBN_XoajgedGAPKMPiZsc3lPfk9mumIZF5sTexDnukB-6kI$>[koha-community[.]org] Koha@lists.katipo.co.nz<mailto:Koha@lists.katipo.co.nz> Unsubscribe: https://urldefense.com/v3/__https://lists.katipo.co.nz/mailman/listinfo/koha__;!!D7IIWT94AA!-gE7h-vS2Ns52YvTVq1jN-603ADRMwBN_XoajgedGAPKMPiZsc3lPfk9mumIZF5sTexDnlOlXPQY$<https://urldefense.com/v3/__https:/lists.katipo.co.nz/mailman/listinfo/koha__;!!D7IIWT94AA!-gE7h-vS2Ns52YvTVq1jN-603ADRMwBN_XoajgedGAPKMPiZsc3lPfk9mumIZF5sTexDnlOlXPQY$>[lists[.]katipo[.]co[.]nz]