Indicators and subfield codes
No level specified
0 Continuing resource of international interest
1 Continuing resource not of international interest
‡a International Standard Serial Number (NR)
‡l ISSN-L (NR)
‡m Canceled ISSN-L (R)
‡y Incorrect ISSN (R)
‡z Canceled ISSN (R)
‡0 Authority record control number or standard number (NR)
‡1 Real World Object URI (R)
‡8 Field link and sequence number (R)
Field definition and scope
This field contains the International Standard Serial Number (ISSN) copied from subfield ‡a of field 022 (International Standard Serial Number) 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 incorrect or canceled ISSN from subfield ‡y or ‡z of field 022 in the bibliographic record.
Additional examples of the use of field 022 (International Standard Serial Number) are in OCLC Bibliographic Formats and Standards.
Guidelines for applying content designations
First Indicator - Level of international interest
You should use the first indicator value as found in the 022 field of the related bibliographic record.
The first indicator position contains a value that specifies whether the continuing resource is of international interest or of local or ephemeral interest only.
- No level of specified
Value indicates that the level of international interest is unknown or not specified. This value is used by all institutions other than the ISSN Centers when recording the ISSN from an issue or from a bibliography.
0 - Continuing resource of international interest
Value 0 indicates that the continuing resource is of international interest, thus a full record has been registered with the ISSN Network.
1 - Continuing resource not of international interest
Value 1 indicates that the continuing resource is not of international interest, thus an abbreviated record has been registered with the ISSN Network.
Second Indicator - Undefined
‡a - International Standard Serial Number
Subfield ‡a contains a valid ISSN for the continuing resource. Enter the ISSN as two groups of four digits, separated by a hyphen. If the final character (check character) is an x, enter an uppercase X.
‡l - ISSN-L
Subfield ‡l contains an ISSN that links together various media versions of a continuing resource.
022 0 ‡a 1234-1231 ‡l 1234-1232
‡m - Canceled ISSN-L
Subfield ‡m contains a canceled ISSN-L that has been associated with the continuing resource. Each canceled ISSN-L is contained in a separate subfield ‡m
022 0 ‡a 1560-1560 ‡l 1234-1231 ‡m 1560-1560
‡y - Incorrect ISSN
Subfield ‡y contains an incorrect ISSN that has been associated with the continuing resource. Each incorrect ISSN is contained in a separate subfield ‡y. A canceled ISSN is contained in subfield ‡z.
022 0046-225X ‡y 0046-2254
‡z - Canceled ISSN
Subfield ‡z contains a canceled ISSN that is associated with the continuing resource. Each canceled ISSN is contained in a separate subfield ‡z.
022 0410-7543 ‡z 0527-740X
‡0 - Authority record control number or standard number
Subfield ‡0 contains a URI for the ISSN in subfield ‡a. For more information about subfield ‡0, see Control Subfields.
022 1534-9322 ǂ0 http://issn.org/resource/ISSN/1534-9322#ISSN
‡1 - Real World Object URI
See Control Subfields for more information about subfield ‡1.
‡8 - Field link and sequence number
‡8 contains data that identifies linked fields and may also propose a sequence for the linked fields. Subfield ‡8 may be repeated to link a field to more than one other group of fields.
The structure and syntax for the field link and sequence number subfield is: ‡8.
The linking number is the first data element in the subfield and required if the subfield is used. It is a variable-length whole number that occurs in subfield ‡8 in all fields that are to be linked. Fields with the same linking number are considered linked. A linking number of "0" (zero) is not used in this field.
The sequence number is separated from the linking number by a period "." and may be optional. It is a variable-length whole number that may be used to indicate the relative order for display of the linked fields (lower sequence numbers displaying before higher ones).
Subfield ‡8 is always the first subfield in the field when it is used.