Category:CS1 errors: LCCN

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This is a tracking category for CS1 citations that have LCCN errors.

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Check |lccn= value

The |lccn= parameter is the Library of Congress Control Number identifier. It is checked to ensure that the identifier is the proper length and has the correct initial digits.

LCCN is a character string 8–12 characters long. The length of the LCCN dictates the character type of the initial 1–3 characters; the rightmost eight are always digits.[1]

LCCN format description
Length Description
8 all characters are digits
9 first character is a lower case letter
10 first two characters are either both lower case letters or both digits
11 first character is a lower case letter, second and third characters are either both lower case letters or both digits
12 first two characters are both lower case letters

Further validation is not performed.

To resolve this error, ensure that the |lccn= value is correct and that there are no other letters, punctuation, or other characters.

Pages with this error are automatically placed in Category:CS1 errors: LCCN.[a]


  1. ^ Pages in the Book talk, Category talk, Draft, Draft talk, Education Program talk, File talk, Help talk, MediaWiki talk, Module talk, Portal talk, Talk, Template talk, TimedText talk, User, User talk, and Wikipedia talk namespaces are not included in the error tracking categories.


  1. ^ "The LCCN Namespace". Network Development and MARC Standards Office. Library of Congress. November 2003. 
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