024 Other Standard Identifier

Field definition and scope:

Field 024 contains a standard number or code published on an item which cannot be accommodated in another field (e.g., field 020 (International Standard Book Number), 022 (International Standard Serial Number), 027 (Standard Technical Report Number)). The type of standard number or code is identified in the first indicator position or in subfield $2 (Source of number or code).

The number or code is copied from subfield $a of field 024 (Other Standard Identifier) of the MARC bibliographic record that represents the description of the item for which a separate holdings record is created. It may also contain any additional codes or a canceled/invalid code from subfields $d or $z of field 024 in the bibliographic record.

Additional information and description of the use of field 024 are given in field 024 (Other Standard Identifier) in the MARC 21 Format for Bibliographic Data.

Field 024 is repeatable.

Guidelines for applying content designators:

For indicator and subfield code definitions and examples, and designator repeatability, see table below:

Position	Description	Repeatability
Field 024	Other Standard Identifier	R
Indicator:
First	Type of standard number or code
0	International Standard Recording Code
1	Universal Product Code
2	International Standard Music Number
3	International Article Number
4	Serial Item and Contribution Identifier
7	Source specified in subfield $2
8	Unspecified type of standard number or code

Second	Difference indicator
#	No information provided
0	No difference
1	Difference

Subfield code:
$a	Standard number or code	NR
$c	Terms of availability	NR
$d	Additional codes following the standard number or code	NR
$q	Qualifying information	R
$z	Canceled/invalid standard number or code	R
$2	Source of number or code	NR
$6	Linkage	NR
$8	Field link and sequence number	R

Input conventions:

Number or code structure and Display constants

Punctuation

Repeatability

Embedded holdings information

Content designator history:

Second Indicator - Difference Indicator [defined]: In 1993, the second indicator was given its present definition. Records created prior to this change may contain a code # (blank) meaning undefined.

Subfield $q - Qualifying information [new, 2013]