Help:Cite errors/Cite error references missing key

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Overview

A footnote used multiple times may be defined with a name:

<ref name="foo">content</ref>

To invoke a named footnote:

<ref name="foo" />

References may also be defined within the reference list:

{{reflist|refs=
<ref name=rename1>refcontent1</ref>
<ref name=rename2>refcontent2</ref>
<ref name=rename3>refcontent3</ref>
<ref name=rename4>refcontent4</ref>
}}

List-defined references may be invoked by the standard markup or by use of {{r}}.

Issues and resolution

All references defined in the reference list must be invoked in the content. Unused references must be removed or commented out.

Technical

Pages with this error message are placed into Pages with incorrect ref formatting. The system message page is at Cite error references missing key.