MediaWiki:Apihelp-main-param-errorsuselocal
From MoodleDocs
If given, error texts will use locally-customized messages from the MediaWiki namespace.
Note: You are currently viewing documentation for Moodle 3.7. Up-to-date documentation for the latest stable version of Moodle may be available here: Apihelp-main-param-errorsuselocal.