Enter LCCNs in bibliographic records (field 010)

Overview

When you add or correct an LCCN:

Enter all non-blank characters.
After you reformat or take an action on the record, Connexion displays the LCCN with no hyphen, 1-3 leading blanks in unoccupied prefix positions, 1-5 leading zeros in unoccupied number positions, and (pre-2001 LCCNs only) a trailing blank in position 12.

Displaying the LCCN without the hyphen is consistent with the way LCCNs display in newly published materials.
In most cases, the system can supply blank spaces in the prefix and/or a final blank as required to format a valid LCCN; you need not enter blanks.
If you enter the LCCN with a hyphen, you need not enter leading zeros in the serial number; the system can supply them. However, if you enter the LCCN without a hyphen, you must include leading zeros.
Validation errors on field 010 often result from too many characters in any portion of the LCCN, embedded blanks in any portion, missing letters or numbers, or (if you omit the hyphen) missing leading zeros in the serial number.

The following tables provide details on required formatting for both pre-2001 LCCNs (2-digit year) and current LCCNs (4-digit year). In the tables, note that each underline character represents a space.

LCCN segments

LCCN segment	Pre-2001 LCCN length and position of segment	Current LCCN length and position of segment
Alphabetic prefix	Up to 3 letters Positions 1 through 3 1 to 3 leading blanks fill unoccupied positions Note: You need not enter leading blanks in the LCCN prefix.	1 or 2 letter Positions 1 and 2 1 or 2 leading blanks fill unoccupied positions Note: You need not enter leading blanks in the LCCN prefix.
Year	2 digits Positions 4 and 5	4 digits Positions 3 through 6
Hyphen	Include or omit Not retained or displayed in record	Include or omit Not retained or displayed in record.
Serial number	1 to 6 digits Positions 6 through 11 1-5 leading zeros fill unoccupied positions Note: Enter leading zeros if you omit the hyphen. You may omit leading zeros if you include the hyphen.	1 to 6 digits Positions 6 through 11 1-5 leading zeros fill unoccupied positions Note: Enter leading zeros if you omit the hyphen. You may omit leading zeros if you include the hyphen.
Supplement blank	1 blank after last digit of serial number Position 12 Note: You need not enter a final blank space.	Not needed
Examples of correct data entry	With hyphen: abc98-123456_ ab98-3456 _a98-56_ a98-56 Without hyphen: abc98123456_ abc98123456 _ab98003456 ab98003456 a98000056	With hyphen: ab2002-123456 a_2002-3456 a2002-3456 __2002-56 2002-56 Without hyphen: ab2002123456 a_2002003456 a2002003456 __2002000056 2002000056

LCCN types

LCCN type	Pre-2001	2001
No prefix	Entered: 74-1513 Entered: 74001513 Formatted: ___4001513_	Entered: 2002-277579 Entered: 2002277579 Formatted: 2002277579
1-letter prefix	Entered: a25-20 Entered: a25000020 Formatted: a 25000020_	Entered: a2001-336783 Entered: a2001336783 Formatted: a_2001336783
2-letter prefix	Entered: cd25-20 Entered: cd25000020 Formatted: cd_25000020_	Entered: cf2002-701624 Entered: cf2002701624 Formatted: cf2002701624
3-letter prefix	Entered: agr25-20 Entered: agr25000020 Formatted: agr25000020_	Not used in post-2000 LCCNs.
Serial number 1 digit	Entered: 85-2 Entered: 85000002 Formatted: ___85000002_	Entered: 2001-2 Entered: 2001000002 Formatted: 2001000002
Serial number 2-5 digits	Entered: 00-42732 Entered: 00042732_ Formatted: ___00042732_	Entered: 2001-58650 Entered: 2001058650 Formatted: 2001058650
Serial number 6 digits	Entered: 00-687172 Entered: 00687172 Formatted: ___00687172_	Entered: 2002-277579 Entered: 2002277579 Formatted: 2002277579