NOTE: Some fields are listed twice as they have more than one use.
Bibliographic 9xx fields in active use:
900 – Level 2/Level 3 notes (SCP Shared Cataloging Program information)
905 – Field to retain previous OCLC number/001 when bib record is merged and/or marked for suppression/deletion — to prevent OCLC number duplicates
907 – Used in OCLC to target the Millennium bib record number to overlay (not retained in Millennium)
907 – OTF Bib (shows that Bib record was created on the fly – usually at checkout)
911 – SCP Tier 1
912 – SCP Tier 2
913 – SCP Tier 3
936 – Mix of volume information (historic?) and OCLC parallel record numbers.
941 – PFA coded 541 text.
945 – PFA condition notes
946 – PFA cataloging notes
948 – PFA restriction notes
949 – Used to load item information from OCLC and other sources (not retained in Millennium)
950 – ITSL – used to mark a record for the TRIS database
954 – Marcive authority load marker
955 – C&MS use
956 – Load source/cataloger initials/date. See details below.
957 – OCLC load marker
958 – Marker for titles which have too many items to fit on one bib record, for which multiple bib records have been created
959 – Saved 856 fields when an SFX 856 is added to the record
990 – ANAL note.
993 – Marker used for identifying category/characteristics of this bib record for inclusion or exclusion in various LSO Create Lists queries. Examples of possible use would be “Unlinked analytic” or “Government publication”. Will be in the form: $a<yyyymmdd>$b<category>
994 – OCLC data (added automatically)
998 – AV track information
999 – Deletion marker – use specified here: Deletion: Bibliographic Record
NOTE: SCP and related details may be found here: Bibliographic Field Use Electronic Resources and Special Collections
Bibliographic 9xx fields with historic information; ILS Data Cleanup group reviewing
901 – Melvyl affiliate marker for ITSL, IGSL records loaded from Melvyl (over 400,000)
902 – Misc. cataloging notes (~ 3,500)
906 – Other copy note for microforms (~2,000)
935 – Gladis number (indexed)
945 – copy of 245 $a, NRLF (remove after ZAP OCLC project complete) – from CDL google upgrade of n-level records
990-991 – Innopac migration data
992 – NRLF numbers (remove after ZAP OCLC project complete)
995-996 – NRLF values (remove after ZAP OCLC project complete)
Bibliographic 9xx fields — Reserved for SILS; DO NOT use (any data in these fields will be emptied prior to SILS implementation)
949* (used to send item information from OCLC, not retained)
Catalogers are expected to include a 956 with their initials and the date when records are exported from OCLC. This can be done automatically via an OCLC macro.
Batch loads also use 956 to record load source and date.
956$b Values (partial list; not maintained)
ACLS Humanities E-Book
APA e-Book Collection
Casal (aka Casalini)
Cambridge E-Book Collection
Counseling and Psychotherapy Transcripts
Ethnographic Video Online
Foundations & Trends
Garci (aka Garcia)
Key Engineering Materials
Mass Observation Online
Materials Science Forum
OSO Business and Management
OSO Economics and Finance
OSO Public Health (and Epidemiology)
PRVY (aka GOBI)
Slavery & Anti-Slavery
World Scientific e-Book Collection
WorldCat Collection Set
Fields currently in the $a (to be moved to $b):
NOTE: 9xx field use was reviewed by Cataloging Metadata Council Spring 2011 and some data cleanup done to delete data or consolidate field use.
Last updated date: 01/27/2010
Author: Cataloging & Metadata Council
Update Group: Cataloging & Metadata Council
993 information added
Tue, 05/28/2013 – 14:14 — epinto
Added 993 to the list of bib 9xx fields currently in use, and removed 993 from the list of bib 9xx fields available for future use.
956 values – added batchload
Fri, 01/20/2012 – 12:20 — Charis Takaro
956 values – added batchload values and link to instructions for catalogers to add 956 via a macro