Category:CS1 errors: redundant parameter

This is a tracking category.
It is used to build and maintain a list or 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 subcategories 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).
Administrators: Please do not delete this category as empty!
This category may be empty occasionally or even most of the time.

This is a tracking category for CS1 citations with redundant parameters.

Help desk

More than one of |<param1>=, |<param2>=, and |<param3>= specified

This error occurs when a Citation Style 1 or Citation Style 2 template includes more than one parameter that maps to the same meaning. For example, |author=, |last=, and |last1= are all synonyms of each other, so no more than one of these parameters should ever be used in a single template.

To resolve this error, remove or modify the redundant parameter(s).

This error occurs when a CS1 or CS2 template uses more than one type of author or editor name-list style. There are three kinds of incompatible author-name-list styles:

|authorn= and |lastn= / |firstn= (and their various aliases), |vauthors=, and |authors=

and similarly, three editor-name-list styles:

|editorn= and |editor-lastn= / |editor-firstn= (and their various aliases) as well as |veditors=

To resolve this error, choose one name-list-style. Use the chosen style for both of the author and editor name-lists.

Pages with these errors are automatically placed in Category:CS1 errors: redundant parameter.

Notes

  1. ↑ Pages in the Category talk, Draft talk, File talk, Help talk, MediaWiki talk, Module talk, Portal talk, Talk, Template talk, User, User talk, and Wikipedia talk namespaces are not included in the tracking categories. In addition, pages with names matching the patterns '/[Ss]andbox', '/[Tt]estcases', '/[^/]*[Ll]og', and '/[Aa]rchive' are not included in the tracking categories.