[Koha-bugs] [Bug 41060] Add a value_builder to check if ISSN is valid

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=41060 --- Comment #9 from David Nind <david@davidnind.com> --- Testing notes (using KTD) - MARC21 installation: 1. Examples of valid and invalid ISSNs: - Valid: 0317-8471, 1050-124X, 1234-5679 - Invalid: 1234-5679X (too long), 1234-567 (too short), 1234-567A (only X is allowed) 2. Edit the SER framework to add validate_issn.pl to 22$a. 3. Edit a record with an ISSN tag (I used Chapman, biblionumber = 44) -- You are receiving this mail because: You are watching all bug changes.