024 Other Standard Identifier (R) (Variable Data Field)
Field 024 contains a standard number or code or URI associated with the entity named in the 1XX field which cannot be accommodated in another field (i.e., field 020 (International Standard Book Number) and field 022 (International Standard Serial Number)).
The source of the standard number or code or URI is identified in subfield $2 (Source). It is recommended to identify a source for standard numbers or codes in $a; however, indicating source of a URI in $0 or $1 is optional when there is no $a. When identifiers are from different source vocabularies they should be recorded in separate occurrences of the field.
The National level record requirement for this field is Mandatory if applicable.
Field 024 is repeatable.
Guidelines for applying content designators:
For indicator and subfield code definitions and examples, National level (NLR) record requirements, and designator repeatability, see table below:
Position |
Description |
NLR |
Repeatability |
Field 024 |
Other Standard Identifier |
A |
R |
Indicator: |
|
|
|
First |
M |
|
|
7 |
A |
|
|
8 |
A |
|
|
|
|
|
|
Second |
Undefined; contains a blank |
M |
|
|
|
|
|
Subfield code: |
|
|
|
$a |
A |
NR |
|
$c |
O |
NR |
|
$d |
O |
NR |
|
$q |
|
R |
|
$z |
A |
R |
|
$0 |
|
NR |
|
$1 |
|
NR |
|
$2 |
A |
NR |
|
$6 |
A |
NR |
|
$8 |
O |
R |
See: Examples for this field.
Structure of the Other
Standard Identifiers
Subfield $q
- Qualifying information [new,
2013]
Subfield $0
- Authority record control number or
standard number [new, 2019]
Subfield $1 - Real World Object URI [new, 2019]
Subfield $2 - Source of number or code [renamed, 2019]
LC Guidelines:
Related MARC fields or documents:
MARC 21 Format for Bibliographic Data:
Source Codes for Vocabularies, Rules, and Schemes:
Standard Identifier Source Codes
See also: