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Appendix F - Format Changes

MARC 21 Authority
December 2023

This section is provided for the lists of format changes that accompany each update to the MARC 21 Format for Authority Data.

MARC 21 FORMAT FOR AUTHORITY DATA

FORMAT CHANGE LIST

Update No. 37, December 2023
This page documents the changes contained in the thirty-seventh update to the 1999 edition of the MARC 21 Format for Authority Data. Update No. 37 (December 2023) includes changes resulting from proposals that were considered by the MARC 21 community since the publication of Update No. 36 (June 2023).

Format changes in previous updates can be found on the MARC Format Overview page.
■ New content designators:
Field
023Cluster ISSN (R)
Subfield
$d Other designation (R) in 376 (Family Information)

■ Obsolete content designators:
Subfields
$l ISSN-L (NR) in 022 (International Standard Serial Number)
$mCanceled ISSN-L (R) in 022 (International Standard Serial Number)

■ Changes in content designator names and definitions:
Field
371Address field definition and scope redescribed.
372Field of Activity field definition and scope redescribed.
374Occupation field definition and scope redescribed.
Subfield
$2 Source of term redescribed in 376 (Family Information)

UPDATE 37 LOCAL PRINT GUIDE

The following sections and fields were created/changed in Update No. 37 and should be printed to keep a print copy of the format up-to-date. Changes appear in red.

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