Template:Please check ISSN
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Usage
This template is used to mark an International Standard Serial Number (ISSN) that may not be valid. For example:
<syntaxhighlight lang="wikitext"> ISSN 1234-56789 Parameter error in {{issn}}: Invalid ISSN. </syntaxhighlight>
The template does not produce any visible change to the article (unless the article is viewed in preview mode):
ISSN 1234-56789 Parameter error in {{issn}}: Invalid ISSN.
Rather, it adds the article to the hidden maintenance/tracking category: Category:Articles with invalid ISSNs.
In preview mode, it shows the warning message (Warning: Check ISSN). This warning is shown only in preview mode.
Parameters
The optional parameter |reason= simply provides a comment to explain why the ISSN may not be valid. For example:
<syntaxhighlight lang="wikitext"> ISSN 1234-56789 Parameter error in {{issn}}: Invalid ISSN. </syntaxhighlight>
See also
- {{ISSN-needed}}
- {{Listed Invalid ISSN}}