MARC Report 255: MARC21 Changes

MARC Report 255 adds support for the changes introduced by–

MARC21 Update No. 30--Bibliographic, Authorities, Holdings

–announced by the Library of Congress on May 27, 2020.

In addition, MARC Report 255 includes codelist updates to support the following notices:

TECHNICAL NOTICE (February 21, 2020)
TECHNICAL NOTICE (March 13, 2020)
TECHNICAL NOTICE (April 13, 2020)
TECHNICAL NOTICE (May 1, 2020)
TECHNICAL NOTICE (May 19, 2020)