Template:Please check ISSN/doc
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 | This is a documentation subpage for Template:Please check ISSN. It may contain usage information, categories and other content that is not part of the original template page. |
 | This template is used on many pages and changes may be widely noticed. Test changes in the template's /sandbox or /testcases subpages, or in your own user subpage. Consider discussing changes on the talk page before implementing them. |
 | This template should not be used in citation templates such as Citation Style 1 because it includes markup that will pollute the COinS metadata they produce; see Wikipedia:COinS. |
Usage
This template is used to mark an International Standard Serial Number (ISSN) that may not be valid. For example:
{{issn|1234-56789}} {{Please check ISSN}}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:
{{issn|1234-56789}} {{Please check ISSN|reason=Too many digits.}}See also
- {{ISSN-needed}}
- {{Listed Invalid ISSN}}