[Koha] ISBN - must they be unique?

e-Libris Helpdesk elibris.helpdesk at gmail.com
Thu Oct 4 07:28:44 NZDT 2012

If all at possible you should not have records with duplicate ISBNs in your
database. If you happen to upload a record containing an ISBN that is found
in two existing records, Koha will create a third record. It does not
matter if you set up your import profile to match on the ISBN, Koha cannot
decide which of the two existing records to use.

On Wed, Oct 3, 2012 at 1:47 PM, Elaine Bradtke <eb at efdss.org> wrote:

> In the process of cleaning up data to prepare for a batch upload into
> Koha, I have noticed that some of our ISBNs are not unique.  These are
> books from small independent publishers who forgot to change the ISBN
> when they issued a new book.   I'm happy to leave them in the ISBN
> field (020a ) as long as this won't cause problems in Koha.   Looking
> at the framework it is also tagged as  biblioitems.isbn.  I know
> record matching uses ISBN. Does anyone know if the contents of this
> field must be unique?
> Thanks
> --
> Elaine Bradtke
> Data Wrangler
> English Folk Dance and Song Society | http://www.efdss.org
> Cecil Sharp House, 2 Regent's Park Road, London NW1 7AY
> Tel    +44 (0) 20 7485 2206 (This number is for the English Folk Dance
> and Song Society in London, England. If you wish to phone me
> personally, send an e-mail first. I work off site)
> --------------------------------------------------------------------------
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> Charity Registered in England and Wales No. 305999
> ---------------------------------------------------------------------------
> "Writing about music is like dancing about architecture"
> --Elvis Costello (Musician magazine No. 60 (October 1983), p. 52)
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