[Koha] Is there a way to get the biblionumber into MARC field 001 for bib records?

[Frédéric Demians]

 > (I have created a bug related to this, suggesting that 001 always be
 > used as the identifier for OAI-PMH, or that a syspref be created to
 > let a library choose whether to use biblionumber or 001 as identifier
 > for OAI-PMH:
 > http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=6198 )

You don't need to create a new syspref and change Koha code. You need to
operate Koha OAI server in 'extended' mode. See the doc or 'perldoc
oai.pl'. In extended mode, you have your own XSL to transform your MARC
biblio record into any format, and so you can produce a Dublin Core
format with what you want in identifier term.

-- 
Frédéric DEMIANS
http://www.tamil.fr/u/fdemians.html