[out:xml][timeout:3600]; ( node(267905619)['wikidata'='Q1977321']['wikipedia'='de:Nenkersdorf']; way(254253660)['wikidata'='Q1416304']['wikipedia'='de:Liste der Baudenkmäler in Siegen']; way(42609462)['wikidata'='Q1620146']['wikipedia'='de:Liste der Baudenkmäler in Siegen']; way(45834138)['wikidata'='Q104666042']['wikipedia'='de:Kindelsberg']; way(934228577)['wikidata'='Q61776438']['wikipedia'='de:Liste der Baudenkmäler in Siegen']; ); (._;>;); out meta qt;//['wikipedia wikidata mismatch']
[out:xml][timeout:3600]; ( node(804198503)['operator:wikipedia'='American Tower']; ); (._;>;); out meta qt;//['malformed secondary wikipedia tag - for operator prefixed tags']
[out:xml][timeout:3600]; ( node(9588634002)['network:wikidata'='Q27926285']['network:wikipedia'='de:Verkehrsgemeinschaft Westfalen-Süd']; ); (._;>;); out meta qt;//['wikipedia wikidata mismatch - for network prefixed tags']
JOSM Wikipedia plugin
Note to self: online version hosted at https://matkoniecz.github.io/OSM-wikipedia-tag-validator-reports, files are stored at https://github.com/matkoniecz/OSM-wikipedia-tag-validator-reports.