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Which field in Koha (MARC21) is the identifier field?
Up to Table of ContentsThis FAQ applies to: 3.0, 3.1, 3.2
In the MARC 21 code there is the 001 field, which is the unequivocal identifier of each record. However, I can't find any support for this field in Koha (for ex. a script which fills this field automatically).
Koha in MARC21 setup uses the 999 to register the unique identifier of each bibliographic record.
IMPORTANT: Koha uses two unique identifiers of each bibliographic record.
- The 999$c field stores the Koha biblionumber [used in the MySQL table 'biblio']
- The 999$d field stores the Koha biblioitemnumber [used in the MySQL table 'biblioitems']
The reason for this is that the 001 field field 001 is a special field that you cannot map data to in Koha
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