MARC Report 258 adds support for the changes introduced by–
MARC21 Update No. 33--Bibliographic, Authorities, Holdings
–announced by the Library of Congress on November 24, 2021.
In addition, MARC Report 258 includes code list updates to support the following notices:
TECHNICAL NOTICE (December 9, 2021)
TECHNICAL NOTICE (December 7, 2021)
TECHNICAL NOTICE (November 26, 2021)
TECHNICAL NOTICE (October 21, 2021)
TECHNICAL NOTICE (September 23, 2021)
TECHNICAL NOTICE (July 30, 2021)
TECHNICAL NOTICE (June 14, 2021)