This is a tracking category. It is used to build and maintain lists of pages—primarily for the sake of the lists themselves and their use in article and category maintenance. It is not part of the encyclopedia's categorization scheme. More information: This category is hidden on its member pages—unless the corresponding user preference (Appearance → Show hidden categories) is set. These categories are used to track, build and organize lists of pages needing "attention en masse" (for example, pages using deprecated syntax), or that may need to be edited at someone's earliest convenience. These categories also serve to aggregate members of several lists or sub-categories into a larger, more efficient list (discriminated by classifications). Typically, tracking categories are automatically populated by templates invoked in pages or by the MediaWiki software (see Special:TrackingCategories for an overview of the latter).

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This is a tracking category for CS1 citations that have unsupported |chapter= (or alias) errors.

Many (although not all) cases in the category can automatically be fixed by clicking here to activate User:Citation bot.

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|chapter= ignored

Citation Style 1 templates ((cite web)), ((cite news)), ((cite journal)), ((cite magazine)), ((cite press release)), ((cite podcast)), ((cite newsgroup)), as well as template ((citation)) when it uses |work= or any of its aliases, do not support |chapter= and its components |trans-chapter=, |script-chapter=, |chapter-url=, and |chapter-format=. The alias parameters |contribution=, |entry=, |article=, |section=, and their components, are similarly not supported.

To resolve this error:

• use a more appropriate citation template, or
• place the content of the |chapter= parameter in |title=, or
• for ((cite news)), |department= can be used to give the name of the newspaper's section, such as "Obituaries", or
• for ((citation)), remove |work= or its aliases such as |website= and place their content in |title= if appropriate
• move the content of the |chapter= parameter out of the template, before the closing </ref>

Pages with this error are automatically placed in Category:CS1 errors: chapter ignored.^[a]