04. “Exceptional” fields and subfields - authority records
When you enter a new record into a CBS MARC 21 database that was made by using a create record template, when you edit or update an existing record in a CBS MARC 21 database, when you remote copy or remote derive a record from WorldCat, or when you make a copy in a CBS MARC 21 database yourself, several “automatic actions” are done on several fields and subfields. The number of fields it applies, is relatively small.
Below, we give an overview of those “exceptional” (sub)fields.
| (CBS) MARC 21 field | PICA+ field | Descrizione | M21 subfield | PICA+ subfield |
Descrizione | R / NR |
|---|---|---|---|---|---|---|
| (M)000 | 002L | Leader | NR | |||
| $b | $b | Stato del record | NR | |||
| (M)003 | 004C | Control Number Identifier | NR | |||
| n/a | $a | Control number identifier | NR | |||
| (M)035 | 015Z | Numero di controllo del sistema | R | |||
| Ind. 1 | $S(1) | First indicator | ||||
| Ind. 2 | $S(2) | Second indicator | ||||
| $a | $a | System control number | NR | |||
| $z | $z | Canceled/invalid control number | R | |||
| $6 | $T/$U | Linkage | NR | |||
| $8 | $X | Field link and sequence number | R | |||
| (M)040 | 016E | Cataloguing Source | NR | |||
| Ind. 1 | $S(1) | First indicator | ||||
| Ind. 2 | $S(2) | Second indicator | ||||
| $a | $a | Original cataloging agency | NR | |||
| $b | $b | Lingua di catalogazione | NR | |||
| $c | $c | Transcribing agency | NR | |||
| $d | $d | Modifying agency | R | |||
| $e | $e | Description conventions | R | |||
| $f | $f | Subject heading/thesaurus conventions | NR | |||
| $6 | $T/$U | Linkage | NR | |||
| $8 | $X | Field link and sequence number | R | |||
| (M)042 | 016G | Codice di autenticazione | NR | |||
| $a | $a | Codice di autenticazione | R | |||
| 0614 | 003O | Record control number of the linked record in remote database, e.g. OCN in WorldCat | ||||
| $a | $a | Remote source id (e.g. OCoLC) | NR | |||
| $0 | $0 | Record control number | NR | |||
| 0615 | 003P | Control number of the linked record in remote database that is superseded by another number, e.g. superseded OCN in WorldCat | ||||
| $a | $a | Remote source id (e.g. OCoLC) | NR | |||
| $0 | $0 | Record control number | NR |