Leader – authority format

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Character	Description	Explanation	CBS MARC tag	PICA+ tag	Comment	Import, online cataloguing and MARC 21 export
			M000	002L
00-04	Record length	System generated	$a	$a	Although this subfield is not used in CBS MARC 21 currently, it has been defined in the CBS MARC 21 format for completeness.	During import: the record length is not put in subfield $a. Thus, it is ignored. During online cataloguing: the record length is not added. During export: the record length is not generated. Instead, 5 blanks are generated.
05	Record status	Variable; a – Increase in encoding level c – Corrected or revised d – Deleted n – New o – Obsolete s – Deleted; heading split into two or more headings x – Deleted; heading replaced by another heading	$b	$b		During import: The record status value is changed into (or remains) c - Corrected or revised -. But when the record status is d - Deleted -, s - Deleted; heading split into two or more headings - or x - Deleted; heading replaced by another heading -, this value is kept. During online cataloguing: the following record status values can be added or updated: a, c or n is (in theory) possible. Values d, s or x are not allowed. During export: When tag 0240/ 001E - Source and date of offline deletion of main/master level data - is present, value d - Deleted is generated. When option record-status - value is new¹, value n - New - is generated. When option record-status value is corrected, value c - Corrected or revised -is generated. When option record-status value is deleted, value d - Deleted - is generated. In other cases, the record status is exported. But when the value is missing, the following value is generated: c - Corrected or revised -.
06	Type of record	Fixed value; z - Authority data	$c	$c	Although these subfields are not used in CBS MARC 21 currently, they have been defined in the CBS MARC 21 format for completeness.	During import: the value z is not put in subfield $c. Thus, it is ignored. During online cataloguing: the value z is not added. During export: the value z is generated.
07	Undefined character position	Fixed value; # - Undefined	$d	$d		During import: the values are not imported in subfields $d and $e. Thus, they are ignored. During online cataloguing: the values are not added. During export: blanks (“undefined”) are generated.
08	Undefined character position	Fixed value; # - Undefined	$e	$e
09	Character coding scheme	Variable; # - MARC-8 a - UCS/Unicode	$f	$f		During import: the value is not imported in subfield $f. Thus, it is ignored. During online cataloguing: the value cannot be added. During export: the value a - UCS/Unicode - is exported. NB Only Unicode/UTF8 is used in CBS.
10	Indicator count	Fixed value; 2 - Number of character positions used for indicators	$g	$g		During import: the value is not put in subfield $g. Thus, it is ignored. During online cataloguing: the value is not added. During export: value 2 is generated.
11	Subfield code length	Fixed value; 2 - Number of character positions used for a subfield code	$h	$h		During import: the value is not put in subfield $h. Thus, it is ignored. During online cataloguing: the value is not added. During export: value 2 is generated.
12-16	Base address of data	System generated; [number] - Length of Leader and Directory	$i	$i		During import: the value is not put in subfield $i. Thus, it is ignored. During online cataloguing: the value is not added. During export: the value is not generated. Instead, 5 blanks are generated.
17	Encoding level	Variable; n - Complete authority record o - Incomplete authority record	$j	$j	This has a close relation with tag 0500 / 002@ Bibliographic type and status subfield $0 pos. 3 Encoding level	During import: the value is put in subfield $j. During online cataloguing: the value can be added or updated. During export: the value is exported. When the value is missing, the following value is generated: o - Incomplete authority record -.
18	Punctuation policy	Variable; # - No information provided c - Punctuation omitted i - Punctuation included u - Unknown	$k	$k		During import: the value is put in subfield $k. During online cataloguing: the value can be added or updated. During export: the value is exported. When the value is missing, the following value is generated: blank (# - No information provided -).
19	Undefined	Fixed value; # - Undefined	$l	$l	Although these subfields are not used in CBS MARC 21 currently, they have been defined in the CBS MARC 21 format for completeness.	During import: the value is not imported in subfield $l. Thus, it is ignored. During online cataloguing: the value is not added. During export: blank (# - Undefined -) is generated.
20	Length of the length-of-field portion	Fixed value; 4 - Number of characters in the length-of-field portion of a Directory entry	$m	$m		During import: the value is not put in subfield $m. Thus, it is ignored. During online cataloguing: the value is not added. During export: value 4 is generated.
21	Length of the starting-character-position portion	Fixed value; 5 - Number of characters in the starting-character-position portion of a Directory entry	$n	$n		During import: the value is not put in subfield $n. Thus, it is ignored. During online cataloguing: the value is not added. During export: value 5 is generated.
22	Length of the implementation-defined portion	Fixed value; 0 - Number of characters in the implementation-defined portion of the Directory entry	$o	$o		During import: the values are not put in subfields $o and $p. Thus, they are ignored. During online cataloguing: the values are not added. During export: values 0 are generated.
23	Undefined	Fixed value; 0 - Undefined	$p	$p

1. Option record-status value new, corrected or deleted is generated by the pusher on basis of the log record and the target database. So, the record status is determined by the software.