Making changes to MARC is a layered process. In addition to approving he MARC changes, the NACO nodes that will receive MARC authorities must give an OK before the approved changes can be implemented. I think this is an instance where the NACO nodes have not given an OK yet.  It's not something that's under OCLC's control.

It would be helpful if the NACO nodes' own approval process were a bit more transparent. 


On Fri, Mar 3, 2017 at 3:43 AM, Horne, Carl Stanley <[log in to unmask]> wrote:

I believe that if you simply omit the second $c (keeping the semicolon-space) OCLC’s validation algorithm will be happy, although the MARC Input standards list the $c as being repeatable.




Carl Horne

Slavic and Central Eurasian Cataloger

& NACO/SACO Liaison

Indiana University Library

Bloomington, IN  47405


From: Program for Cooperative Cataloging [mailto:[log in to unmask]GOV] On Behalf Of Charles Croissant
Sent: Thursday, March 2, 2017 1:07 PM
To: [log in to unmask]
Subject: repeating the subfield $c in a 111 authority record


Dear collective wisdom,

I've run into a problem in trying to update a conference authority record to RDA. I think the problem is actually with OCLC's validation algorithm, but I'm wondering if others have encountered this as well, and whether it's a "known problem."

I would like to update NAR no2002013383 to RDA. It's for the Council of Pavia-Siena, a 15th-century church council that took place in two locations.

Applying RDA, it appears that the RDA heading (expressed in MARC) should be:

111 2_ $a Council of Pavia-Siena $d (1423-1424 : $c Pavia, Italy; $c Siena, Italy)


i.e. with the subfield $c repeated.

According to MARC 21 for Authority Records, subfield $c _is_ repeatable. There's even a statement to this effect in the General Information X11 section: "Multiple adjacent locations are contained in a repeatable subfield $c."

But when I attempt to validate the heading in OCLC, it fails validation, so I am unable to replace the record.

So I'm wondering, should I remove the second $c and replace the record, or should I wait to replace this record until this validation problem gets fixed?

thanks for any advice,


Charles Croissant
Senior Catalog Librarian
Pius XII Memorial Library
Saint Louis University
St. Louis, MO 63108

Stephen Hearn, Metadata Strategist
Data Management & Access, University Libraries
University of Minnesota
160 Wilson Library
309 19th Avenue South
Minneapolis, MN 55455
Ph: 612-625-2328
Fx: 612-625-3428
ORCID:  0000-0002-3590-1242