Appendix G - Format Changes
MARC 21 Bibliographic
June 2024
This section is provided for the lists of format changes
that accompany each update to the MARC 21 Format for
Bibliographic Data.
MARC 21 FORMAT FOR BIBLIOGRAPHIC DATA
FORMAT CHANGE LIST
Update No. 38, June 2024
This page documents the changes contained in the thirty-eighth
update to the 1999 edition of the MARC 21 Format for
Bibliographic Data. Update No. 38 (June 2024)
includes changes resulting from proposals that were
considered by the MARC 21 community since the publication of Update No. 37 (December 2023).
UPDATE 38 CHANGES
■ New content designators:
Indicator
1stType of entity in 383 (Numeric Designation of Musical Work or Expression)
Indicator values
#No information provided in 383 (Numeric Designation of Musical Work or Expression) 1st indicator: Type of entity
0Work in 383 (Numeric Designation of Musical Work or Expression) 1st indicator: Type of entity
1Expression in 383 (Numeric Designation of Musical Work or Expression) 1st indicator: Type of entity
Subfields
$0 Authority record control number or standard number (R) in 082 (Dewey Decimal Classification Number)
$0 Authority record control number or standard number (R) in 083 (Additional Dewey Decimal Classification Number)
$0 Authority record control number or standard number (R) in 341 (Accessibility Content)
$1 Real World Object URI (R) in 082 (Dewey Decimal Classification Number)
$1 Real World Object URI (R) in 083 (Additional Dewey Decimal Classification Number)
$1 Real World Object URI (R) in 341 (Accessibility Content)
$5 Institution to which field applies (NR) in 773 (Host Item Entry)
$5 Institution to which field applies (NR) in 774 (Constituent Unit Entry)
$5 Institution to which field applies (NR) in 787 (Other Relationship Entry)
■ Changes in content designator
names and definitions:
Fields
341Accessibility Content field definition and scope redescribed
383Numeric Designation of Musical Work renamed Numeric Designation of Musical Work or Expression and field definition and scope redescribed
■ Fast-track changes:
New subfields
$e Relator term (R) in 647 (Subject Added Entry-Named Event)
$e Relator term (R) in 648 (Subject Added Entry-Chronological Term)
$4 Relationship (R) in 647 (Subject Added Entry-Named Event)
$4 Relationship (R) in 648 (Subject Added Entry-Chronological Term)
$5 Institution to which field applies (NR) in 580 (Linking Entry Complexity Note)
Changes to field 055:
Field
055Classification Numbers Assigned in Canada field definition and scope redescribed
Indicator
2ndType, completeness, source of class/call number renamed Type, completeness, source of call/class number and redescribed
2nd Indicator values
0LC-based call number assigned by LAC renamed LCC (or LCC-compatible) call number assigned by LAC
1Complete LC class number assigned by LAC renamed Complete LCC (or LCC-compatible) class number assigned by LAC
2Incomplete LC class number assigned by LAC renamed Incomplete LCC (or LCC-compatible) class number assigned by LAC
3LC-based call number assigned by the contributing library renamed LCC (or LCC-compatible) call number assigned by a Canadian organization other than LAC
4Complete LC class number assigned by the contributing library renamed Complete LCC (or LCC-compatible) class number assigned by a Canadian organization other than LAC
5Incomplete LC class number assigned by the contributing library renamed Incomplete LCC (or LCC-compatible) class number assigned by a Canadian organization other than LAC
6Other call number assigned by LAC redescribed
7Other class number assigned by LAC redescribed
8Other call number assigned by the contributing library renamed Other call number assigned by a Canadian organization other than LAC and redescribed
9Other class number assigned by the contributing library renamed Other class number assigned by a Canadian organization other than LAC and redescribed