Music Library Association Best Practices for identifier for manifestation

Routinely record the element. If feasible, record all standard identifiers present on the resource, including but not limited to ISBN, ISMN, EAN, and UPC. Also routinely record identifiers issued by publishers, including audio recording issue numbers and video recording numbers. Optionally, record identifiers issued by distributors.

For ISMNs: If feasible, record an additional instance of the element containing the equivalent 10- or 13-character version of the ISMN. To convert one ISMN format to another, replace "M" with "9790" or vice versa. The final check digit is the same in both ISMN formats.

For modern commercial recordings, record matrix numbers if they are the only numbers shown on the resource, or if deemed important for identification or access. For rare or historical recordings, record matrix numbers even if other publisher numbers are present.

If the resource is a reprint, reissue, reproduction, issue in an alternate format, etc., and provides an identifier for the original manifestation or an equivalent in an alternate format, record the identifier as a Manifestation: related manifestation of manifestation; do this in addition to formulating a structured or unstructured description of the original manifestation.

For additional guidance for notated music, see Manifestation: plate number for notated music and Manifestation: publisher number for notated music.

In MARC: Record as an identifier using field 020 (ISBN), 024 (UPC, first indicator 1; ISMN, first indicator 2; EAN, first indicator 3), or 028 (audio recording issue number, first indicator 0; matrix number, first indicator 1; videorecording number, first indicator 4; distributor number, first indicator 6).

Routinely encode a 13-digit, EAN-formatted identifier beginning with 979-0 as an ISMN using 024 first indicator 2. Optionally, also encode such an identifier as an EAN using 024 first indicator 3.

See examples in MARC format: identifier for manifestation . For related examples see also: plate number for notated music ; publisher number for notated music

Apply the option for standard identifiers.

In MARC: follow MARC input standards for numbers recorded in 020 or 024: that is, record the identifier without internal spaces or punctuation and without a preceding label.

Apply the option for issue, matrix, videorecording, and distributor numbers.

Apply the option for issue, matrix, plate, publisher, videorecording, and distributor numbers. Record the name of the publisher or distributor (or a trade name, brand name, or label name used by the publishing company) in the same form as transcribed in Manifestation: name of publisher or Manifestation: name of distributor.

In MARC: Record in field 028 $b.

Cataloger's judgment.

In MARC: Generally prefer field 020, 024, or 028 subfield $q for simple clarifications and qualifiers. If more detailed explanation is needed, optionally provide details or clarification as an unstructured description in field 500.

Also consider this condition to apply when a publisher's or distributor's number appears in variant forms on an audio or video recording, its container, accompanying material, etc. In such cases record at least the form on the recording itself (e.g., the labels of a disc). Record other forms as well if deemed useful for identification or access.

When recording identifiers for multiple units, cite the unit(s) to which the identifier applies. When recording identifiers that appear in variant forms in various locations, cite the location in which the identifier is found. For matrix numbers, always record the qualifier matrix even if only one identifier is present.

In MARC: Record in field 020, 024, or 028 subfield $q.

Apply the option. Record identifiers for all units if feasible, including cases where scores and parts bear separate identifiers. Follow each identifier by a qualifier indicating the unit(s) to which it refers.

In MARC: Record qualifiers in field 020, 024, or 028 subfield $q.

Also consider this condition to apply to identifiers known to refer to a Manifestation: related manifestation of manifestation (for example, an identifier on a print resource that has been digitized and issued as an online resource; an identifier from an audio recording's packaging that has been reproduced in facsimile as the packaging for a reissue of that recording).

In MARC: For standard identifiers recorded in fields 020 or 024, record the identifier in subfield $z (invalid or canceled number) rather than $a. For any identifier in an 02x field, supply a qualifying term in subfield $q.

Cataloger's judgment.

In MARC: Amend standard identifier formatting if necessary to conform to MARC input conventions.

Cataloger's judgment.