This category contains pages transcluding Template:URL (talk) with unknown parameters (undefined, misspelled, etc.).

Pages are typically sorted alphabetically by the unknown parameter that is used, e.g. pages using unknown parameter |foo= will be sorted under "F". The name of the page is typically used as a secondary sort key.

Unknown parameters can be detected using Module:Check for unknown parameters in the template. To show the information listed here on a category page, use ((Unknown parameters category)) on the category page.

The most common error in ((URL)) templates is the existence of an equals sign in the URL. To fix this problem, add |1= before the URL, like this:


Articles in this category may be using ((URL)) or one of its redirects instead of ((cite web)) or similar templates.