This is a
tracking category. It is used to build and maintain lists of pages—primarily for the sake of the lists themselves and their use in article and category maintenance. It is not part of the
encyclopedia's categorization scheme.
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This is a tracking category for CS1 citations that have Standard Book Number (SBN) errors.
Check |sbn=
value: <type>
Citation Style 1 and
Citation Style 2 templates that contain |sbn=
are checked to ensure that the
SBN is the proper length (nine digits), that the SBN uses the correct optional separators (simple space or hyphen), and that the final
check digit is correct according to the SBN specification. Only one SBN is allowed in this field because the whole |sbn=
value is included in the citation's
COinS
metadata. See also
Wikipedia:COinS. More than one SBN, or characters that are not part of the SBN, corrupt the COinS metadata and may also corrupt the link to
Special:BookSources.
The error message <type> indicator can be:
To resolve this error, ensure that the |sbn=
value is correct, that only one SBN is used, that the proper optional separators are used, and that no other text is included. If the check digit is a lowercase 'x', change it to an uppercase 'X'.
In very rare cases, publishers have released books with malformed SBNs. If you are certain that a non-conforming SBN truly corresponds to the published work, then you can add accept-this-as-written markup around the identifier to suppress the error message. In many cases, books may have been reissued with a corrected SBN. Use a corrected SBN when possible.
Pages with this error are automatically placed in Category:CS1 errors: SBN. [a]
This category contains only the following page. This list may not reflect recent changes.