Appendix F - Format Changes
MARC 21 Holdings
This section is provided for the lists of format changes
that accompany each update to the MARC 21 Format for
MARC 21 FORMAT FOR HOLDINGS DATA
FORMAT CHANGE LIST
Update No. 25, December 2017
This page documents the changes contained in the twenty-fifth
update to the 1999 edition of the MARC 21 Format for
Holdings Data. Update No. 25 (December 2017)
includes changes resulting from proposals that were
considered by the MARC 21 community during June 2017.
■ New content designators:
$1Real World Object URI (R) in the following fields:
337 (Media Type),
338 (Carrier Type),
347 (Digital File Characteristics),
883 (Machine-generated Metadata Provenance),
Appendix A (Control Subfields).
UPDATE 25 LOCAL PRINT GUIDE
The following sections and fields were created/changed in Update No. 25 and should be printed to keep a print copy of the format up-to-date. Changes appear in red.