MediaWiki:Titleblacklist-custom-location-map

You appear to be trying to create or edit a location map definition for MediaWiki:Titleblacklist-custom-location-map in the wrong namespace.

New location map definitions should be created as modules rather than as templates (e.g., Template:Location map Anytown is wrong; Module:Location map/data/Anytown is correct).
If you are trying to create or edit a location map definition for MediaWiki:Titleblacklist-custom-location-map, please do so at Module:Location map/data/MediaWiki:Titleblacklist-custom-location-map. See Template:Location map/Creating a new map definition for further instructions.
If you are trying to create something other than a location map definition, please make a request to have the page created at Wikipedia:Administrators' noticeboard.