• MARC 21 Data Elements Not Implemented by OCLC

MARC 21 Bibliographic Data Elements not Implemented by OCLC

Last Updated: September 2017

These MARC 21 bibliographic data elements have not been implemented by OCLC. This document indicates possible OCLC action to implement them.

MARC 21 Element Name Future implementation
Non-sorting characters N/A No plans to implement

Note: For more information, see the Control Function Codes section of the MARC 21 Specifications for Record Structure, Character Sets, and Exchange Media: Character Sets and Encoding Options: Part 1: General Character Set Issues.
LDR/05 d - deleted No plans to implement
LDR/17 u - unknown Under consideration
LDR/17 z - not applicable No plans to implement
LDR/19 Multipart resource record level Under consideration
006 Fill character meaning "No attempt to code" Under consideration
007 Fill character meaning "No attempt to code" Under consideration
007 blank ( blank character ) is valid in several positions, but OCLC does not allow blank subfields. No plans to implement due to limitations in record editor
008 Fill character meaning "No attempt to code" Under consideration
038 Record content licensor No plans to implement
066 ‡a Primary G0 character set No plans to implement
066 ‡b Primary G1 character set No plans to implement
760-787 Fill character meaning "No attempt to code" Under consideration
843 ‡6 Linkage Under consideration
845 ‡6 Linkage Under consideration
Note: ind. = indicator