042 Authentication Code (NR) (Variable Data Fields)
First and second indicator :
# Undefined
a Authentication code (R)
Description/Instructions:
Field 042 contains one or more codes that represent different levels of authentication of CONSER records . Codes "lc", "nlc", "nsdp" and "isds/c" represent specific agencies or Centers of Responsibility . Codes "lcd" and "msc", used by some sections of the Library of Congress and CONSER members, reflect the status of name headings in the record.
The presence of any of these codes signifies that the record has been reviewed by a CONSER member and/or Center of Responsibility as to data content, content designation, and conformity with standards and practices agreed upon by CONSER members.
CONSER member authentication:
CONSER members authenticate the records they create or modify. These records may or may not receive further review by a Center of Responsibility. The records carry an "sn"-prefixed control number (field 010 ) and "lcd" or "msc" in field 042. The presence of field 042 triggers the output of the record by OCLC to LC and the subsequent distribution of the record by the MARC Distribution Service- -Serials. (See C1. for further explanation.)
Updating authenticated records:
1. Records with codes "nsdp", "lcd", "msc", or "nst" may be updated using the institution's regular CONSER log-on authorization. Apply the following guidelines for updating field 042:
a. Always leave code "nsdp" in the record. Add an additional code, as appropriate.
b. LC catalogers remove code "lcd" or "msc" when authenticating the record with code "lc." CONSER catalogers may change code "msc" or "lcd" when providing authoritative headings, but may not change code "lcd".
c. Code "nst" should be removed and replaced with code "lc", "lcd", or "msc", as appropriate.
2. Records with code "lc" may be updated by a senior cataloger at designated institutions with a CONSER Editing log-on authorization. The modifications are to be confined to those set forth in Section C3 .
3. Descriptive cataloging in records with code "nlc" may only be changed by the National Library of Canada.
4. Records with an 042 code preceded by an "x" should not be further authenticated (with the exception of ISDS centers). Refer the record to the authenticating agency (LC and NLC) for reconsideration.
5. Prior to fall 1989, records authenticated by CONSER members, NSDP, NST, or the CONSER Minimal Level Cataloging Section at LC that contained no headings were coded "msc". CONSER catalogers subsequently using these records should change the 042 code to "lcd".
Multiple authentication codes:
When a record is authenticated by more than one authenticating agency (e.g., the National Library of Canada for the cataloging data and ISSN Canada for the ISSN-related elements), the subfield is repeated. Example:
When a serial authenticated by either ISSN/Canada or NSDP moves its place of publication from Canada to the U.S., or vice versa, responsibility for ISSN-related data elements is assumed by the Center of Responsibility in the new country of publication. The authentication code for the current authenticating agency is added to field 042. The ISSN center code in 008/20 is also changed to reflect the current center of responsibility. Example:
Related fields, etc.
See also:
