This template is for use in other templates in conjunction with namespace detection. It adds pages to {{Cat|Pages with templates in the wrong namespace}}. The template has been designed to not work in the template namespace so templates transcluding this template can be viewed normally. The template also does not work on sub-pages titled "sandbox" or "testcases" or on [[Wikipedia:Sandbox]].
{{tlx|Single namespace}} can be used instead of this template if only one namespace is specified (such as in the example below).
===Parameters===
; unnamed parameter 1
: (required) This parameter inserts text in the message to specify the namespace the template in question should use.
; {{para|nocat}}
: (optional) when set to a positive value (<code>true</code>, <code>yes</code>, or <code>1</code>), will prevent the inclusion of {{Cat|Pages with templates in the wrong namespace}}. See [[Wikipedia:Category suppression]]
{{Ombox|type=content|image = [[File:Ambox warning orange.svg|50px]]|text={{Error|This template should only be transcluded in the ''help'' namespace(s).}}}}
In the above example, {{tl|Help other}} is used to add pages in the ''help'' namespace to ''Category:Example category''. For pages outside the ''help'' namespace, '''<nowiki>{{Incorrect namespace|help}}</nowiki>''' is used to display the error message box and add the page to ''[[:Category:Pages with templates in the wrong namespace]]''. To omit the error category, use '''<nowiki>{{Incorrect namespace|help|nocat=true}}</nowiki>'''.
