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 supply" |
Under consideration |
| 007 |
Fill character meaning "No attempt to supply" |
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 supply" |
Under consideration |
| 008 BKS/24-27 = 2 |
Offprints |
Under consideration |
| 015 ‡z |
Canceled/invalid national bibliography number |
Under consideration |
| 022 ‡6 |
Linkage |
No plans to implement |
| 022 ‡l |
ISSN-L |
Under consideration |
| 022 ‡m |
Canceled ISSN-L |
Under consideration |
| 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 |
| 041 ‡j |
Language code of subtitles or captions |
Under consideration |
| 044 ‡6 |
Linkage |
No plans to implement |
| 045 ‡6 |
Linkage |
No plans to implement |
| 046 ‡6 |
Linkage |
No plans to implement |
| 047 ‡2 |
Source of code |
Under consideration |
| 047 2nd ind. = 7 |
Source specified in subfield ‡2 |
Under consideration |
| 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 |
| 100 ‡0 |
Authority record control number |
Under consideration |
| 110 ‡0 |
Authority record control number |
Under consideration |
| 111 ‡0 |
Authority record control number |
Under consideration |
| 130 ‡0 |
Authority record control number |
Under consideration |
| 240 ‡0 |
Authority record control number |
Under consideration |
| 260 ‡0 |
Materials specified |
Under consideration |
| 260 1st ind. = 2 |
Intervening publisher |
Under consideration |
| 260 1st ind. = 3 |
Current/latest publisher |
Under consideration |
| 263 ‡6 |
Linkage |
No plans to implement |
| 306 ‡6 |
Linkage |
No plans to implement |
| 353 |
Normalized data and sequential designation |
Under consideration |
| 365 |
Trade price |
No plans to implement |
| 366 |
Trade availability information |
No plans to implement |
| 440 ‡0 |
Authority record control number |
Under consideration |
| 440 ‡w |
Bibliographic record control number |
Under consideration |
| 520 ‡2 |
Source |
Under consideration |
| 520 ‡c |
Assigning source |
Under consideration |
| 520 1st ind. = 4 |
Content advice |
Under consideration |
| 533 ‡5 |
Institution to which field applies |
Under consideration |
| 538 ‡5 |
Institution to which field applies |
Under consideration |
| 600 ‡0 |
Authority record control number |
Under consideration |
| 610 ‡0 |
Authority record control number |
Under consideration |
| 611 ‡0 |
Authority record control number |
Under consideration |
| 630 ‡0 |
Authority record control number |
Under consideration |
| 648 ‡0 |
Authority record control number |
Under consideration |
| 650 ‡0 |
Authority record control number |
Under consideration |
| 651 ‡0 |
Authority record control number |
Under consideration |
| 653 2nd ind. = 0-6 |
Type of term or name |
Under consideration |
| 654 ‡0 |
Authority record control number |
Under consideration |
| 655 ‡0 |
Authority record control number |
Under consideration |
| 656 ‡0 |
Authority record control number |
Under consideration |
| 657 ‡0 |
Authority record control number |
Under consideration |
| 662 ‡0 |
Authority record control number |
Under consideration |
| 700 ‡0 |
Authority record control number |
Under consideration |
| 710 ‡0 |
Authority record control number |
Under consideration |
| 711 ‡0 |
Authority record control number |
Under consideration |
| 730 ‡0 |
Authority record control number |
Under consideration |
| 751 |
Added entry - geographic name |
Under consideration |
| 752 ‡0 |
Authority record control number |
Under consideration |
| 754 ‡0 |
Authority record control number |
Under consideration |
| 800 ‡0 |
Authority record control number |
Under consideration |
| 800 ‡w |
Bibliographic record control number |
Under consideration |
| 810 ‡0 |
Authority record control number |
Under consideration |
| 810 ‡w |
Bibliographic record control number |
Under consideration |
| 811 ‡0 |
Authority record control number |
Under consideration |
| 811 ‡w |
Bibliographic record control number |
Under consideration |
| 830 ‡0 |
Authority record control number |
Under consideration |
| 830 ‡w |
Bibliographic record control number |
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 |
| 852 ‡d |
Former shelving location |
Under consideration |
| 852 ‡u |
Uniform resource identifier |
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 |
| 882 |
Replacement record information |
Under consideration |
| Note: ind. = indicator |
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