Category:CS1 errors: ISSN
This is a tracking categoryIt is used to build and maintain lists of pages—primarily for the sake of the lists themselves. They are not part of the encyclopedia's categorization scheme.
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This is a tracking category for CS1 citations that have ISSN errors.
Citation Style 1 templates that contain
|issn= are checked to ensure that the ISSN is the proper length (eight digits) and that the final check digit validates according to the ISSN specification. Only one ISSN is allowed in this field because the whole
|issn= value is included in the citation's COinS metadata. See also Wikipedia:COinS. The ISSN is always rendered as two four-digit numbers separated with a hyphen.
To resolve this error, ensure that the
|issn= value is correct, that only one ISSN is used, and that no other text is included (allowable characters are 0-9, X, and -). If the check-digit is a lowercase 'x', change it to an uppercase 'X'.
Pages with this error are automatically placed in Category:CS1 errors: ISSN.[a]
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