MARC 21 Bibliographic Data Elements not Implemented by OCLC
Last Updated: February 2010
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. |
| Subfield ‡8 | Field link and sequence number Note: Although not implemented, there are a few instances of subfield ‡8 in WorldCat. | Under consideration |
| 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 (  ) is valid in several positions, but OCLC does not allow blank subfields. | No plans to implement due to limitations in record editor |
| 007/00 = o | Physical description fixed field - kit | Under consideration |
| 007/00 = q | Physical description fixed field - notated music | Under consideration |
| 007/00 = t | Physical description fixed field - text | Under consideration |
| 007/00 = z | Physical description fixed field - unspecified | Under consideration |
| 008 | Fill character meaning "No attempt to code" | Under consideration |
| 022 ‡6 | Linkage | No plans to implement |
| 033 ‡6 | Linkage | No plans to implement |
| 035 ‡6 | Linkage | No plans to implement |
| 038 | Record content licensor | No plans to implement |
| 040 ‡6 | Linkage | No plans to implement |
| 041 ‡6 | Linkage | No plans to implement |
| 044 ‡6 | Linkage | No plans to implement |
| 045 ‡6 | Linkage | No plans to implement |
| 046 ‡6 | Linkage | No plans to implement |
| 050 ‡6 | Linkage | No plans to implement |
| 066 ‡a | Primary G0 character set | No plans to implement |
| 066 ‡b | Primary G1 character set | No plans to implement |
| 080 ‡6 | Linkage | No plans to implement |
| 082 ‡6 | Linkage | No plans to implement |
| 263 ‡6 | Linkage | No plans to implement |
| 306 ‡6 | Linkage | No plans to implement |
| 363 | Normalized data and sequential designation | Under consideration |
| 365 | Trade price | No plans to implement |
| 366 | Trade availability information | No plans to implement |
| 533 ‡7 | Fill character meaning "No attempt to code" | Under consideration |
| 760-787 | Fill character meaning "No attempt to code" | Under consideration |
| 843 ‡5 | Institution to which field applies | Under consideration |
| 843 ‡6 | Linkage | Under consideration |
| 845 ‡5 | Institution to which field applies | Under consideration |
| 845 ‡6 | Linkage | Under consideration |
| 853 ‡n | Pattern note | Under consideration |
| 853 ‡o | Type of unit | Under consideration |
| 853 ‡p | Number of pieces per issuance | Under consideration |
| 853 ‡2 | Source of caption abbreviation | Under consideration |
| 853 ‡3 | Materials specified | Under consideration |
| 854 ‡n | Pattern note | Under consideration |
| 854 ‡p | Number of pieces per issuance | Under consideration |
| 854 ‡2 | Source of caption abbreviation | Under consideration |
| 855 ‡n | Pattern note | Under consideration |
| 855 ‡o | Type of unit | Under consideration |
| 855 ‡p | Number of pieces per issuance | Under consideration |
| 855 ‡2 | Source of caption abbreviation | Under consideration |
| 863 ‡n | Pattern note | Under consideration |
| 863 ‡o | Converted Gregorian year | Under consideration |
| 863 ‡p | Piece designation | Under consideration |
| 864 ‡n | Converted Gregorian year | Under consideration |
| 864 ‡p | Piece designation | Under consideration |
| 865 ‡n | Converted Gregorian year | Under consideration |
| 865 ‡o | Title of unit | Under consideration |
| 865 ‡p | Piece designation | Under consideration |
| 866 2nd ind. = 7 | Source specified in subfield ‡2 | Under consideration |
| 866 ‡2 | Source of notation | Under consideration |
| 867 2nd ind. = 7 | Source specified in subfield ‡2 | Under consideration |
| 867 ‡2 | Source of notation | Under consideration |
| 868 2nd ind. = 7 | Source specified in subfield ‡2 | Under consideration |
| 868 ‡2 | Source of notation | Under consideration |
| Note: ind. = indicator | ||