MARC 21 Format for Authority Data

National Level Requirements

Control Fields

1999 Edition
Update No. 1 (October 2001) through Update No. 12 (October 2010)
001 CONTROL NUMBER                                          M

003 CONTROL NUMBER IDENTIFIER                               M

005 DATE AND TIME OF LATEST TRANSACTION                     M

008 FIXED-LENGTH DATA ELEMENTS                              M
    00-05 Date entered on file                              M
    06    Direct or indirect geographic subdivision         O
    07    Romanization scheme                               O
    08    Language of catalog                               O
    09    Kind of record                                    M
    10    Descriptive cataloging rules                      M
    11    Subject heading system/thesaurus                  M
    12    Type of series                                    M
    13    Numbered or unnumbered series                     M
    14    Heading use-main or added entry                   M
    15    Heading use-subject added entry                   M
    16    Heading use-series added entry                    M
    17    Type of subject subdivision                       O
    18-27 Undefined character positions                     O
    28    Type of government agency                         O
    29    Reference evaluation                              M
    30    Undefined character position                      O
    31    Record update in process                          M
    32    Undifferentiated personal name                    M
    33    Level of establishment                            M
    34-37 Undefined character positions                     O
    38    Modified record                                   O
    39    Cataloging source                                 M