Usage

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This template is used to mark an International Standard Music Number (ISMN) that may not be valid. For example:

{{ISMN|1234-56789}} {{Please check ISMN}}

The template does not produce any visible change to the article (unless the article is viewed in preview mode):

ISMN 1234-56789 Parameter error in {{ISMN}}: Invalid ISMN.

Rather, it adds the article to the hidden maintenance/tracking category: Category:Articles with invalid ISMNs.

In preview mode, it shows the warning message (Warning: Check ISMN). This warning is shown only in preview mode.

Parameters

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The optional parameter |reason= simply provides a comment to explain why the ISSN may not be valid. For example:

{{ISMN|1234-56789}} {{Please check ISMN|reason=Too few digits}}

See also

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