// Adapted from asktico.lib.berkeley.edu/9xx-local-field-use-2/ // Retrieved 2021-01-15
–9xx local field 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