MediaWiki:Apihelp-import-param-interwikiprefix
For uploaded imports: interwiki prefix to apply to unknown usernames (and known users if $1assignknownusers is set).
For uploaded imports: interwiki prefix to apply to unknown usernames (and known users if $1assignknownusers is set).
Link to this page:
https://wiki.pastlives.space/MediaWiki:Apihelp-import-param-interwikiprefix