[out:xml][timeout:3600]; ( relation(9370379)['wikipedia'='de:Epe (Westf)']; ); (._;>;); out meta qt;//['wikipedia tag links to 404']
[out:xml][timeout:3600]; ( relation(19102125)['wikidata'='Q1316656']; ); (._;>;); out meta qt;//['should use a secondary wikipedia tag - linking from wikipedia and wikidata tag to an aspect in a geographic region']
[out:xml][timeout:3600]; ( way(1365313573)['wikidata'='Q328282']; ); (._;>;); out meta qt;//['should use a secondary wikipedia tag - linking from wikidata tag to a brand']
[out:xml][timeout:3600]; ( relation(10549695)['wikidata'='Q108202514']['wikipedia'='nl:Aamsveen']; ); (._;>;); out meta qt;//['wikipedia wikidata mismatch']
[out:xml][timeout:3600]; ( node(4812190922)['wikipedia'='de:O2 (Mobilfunkmarke)']; ); (._;>;); out meta qt;//['blacklisted connection with known replacement']
[out:xml][timeout:3600]; ( node(11504081703)['operator:wikidata'='Q127242843']['operator:wikipedia'='de:Wirelane']; node(12643485535)['operator:wikidata'='Q127242843']['operator:wikipedia'='de:Wirelane']; node(12728932954)['operator:wikidata'='Q127242843']['operator:wikipedia'='de:Wirelane']; node(9006488746)['operator:wikidata'='Q124738664']['operator:wikipedia'='de:EnBW Energie Baden-Württemberg']; node(9646622965)['operator:wikidata'='Q124738664']['operator:wikipedia'='de:EnBW Energie Baden-Württemberg']; node(9646622966)['operator:wikidata'='Q124738664']['operator:wikipedia'='de:EnBW Energie Baden-Württemberg']; ); (._;>;); out meta qt;//['wikipedia wikidata mismatch - for operator prefixed tags']
[out:xml][timeout:3600]; ( relation(10520255)['network:wikidata'='Q15712258']['network:wikipedia'='en:Flixbus']; relation(10520256)['network:wikidata'='Q15712258']['network:wikipedia'='en:Flixbus']; relation(7188637)['network:wikidata'='Q15712258']['network:wikipedia'='en:Flixbus']; relation(7201321)['network:wikidata'='Q15712258']['network:wikipedia'='en:Flixbus']; relation(7201325)['network:wikidata'='Q15712258']['network:wikipedia'='en:Flixbus']; relation(7215917)['network:wikidata'='Q15712258']['network:wikipedia'='en:Flixbus']; relation(7220241)['network:wikidata'='Q15712258']['network:wikipedia'='en:Flixbus']; relation(7220242)['network:wikidata'='Q15712258']['network:wikipedia'='en:Flixbus']; ); (._;>;); out meta qt;//['wikipedia wikidata mismatch - for network prefixed tags']
[out:xml][timeout:3600]; ( node(3327215911)['fixme:wikipedia'='de:Liste der Stolpersteine in Raesfeld']; node(3327215912)['fixme:wikipedia'='de:Liste der Stolpersteine in Raesfeld']; node(3327215913)['fixme:wikipedia'='de:Liste der Stolpersteine in Raesfeld']; node(3327215914)['fixme:wikipedia'='de:Liste der Stolpersteine in Raesfeld']; node(3327215915)['fixme:wikipedia'='de:Liste der Stolpersteine in Raesfeld']; node(3327215916)['fixme:wikipedia'='de:Liste der Stolpersteine in Raesfeld']; node(3327235122)['fixme:wikipedia'='de:Liste der Stolpersteine in Raesfeld']; node(3327235123)['fixme:wikipedia'='de:Liste der Stolpersteine in Raesfeld']; node(3327235124)['fixme:wikipedia'='de:Liste der Stolpersteine in Raesfeld']; node(3327350799)['fixme:wikipedia'='de:Liste der Stolpersteine in Raesfeld']; node(3327350800)['fixme:wikipedia'='de:Liste der Stolpersteine in Raesfeld']; node(3327350801)['fixme:wikipedia'='de:Liste der Stolpersteine in Raesfeld']; node(3327350802)['fixme:wikipedia'='de:Liste der Stolpersteine in Raesfeld']; node(3327350803)['fixme:wikipedia'='de:Liste der Stolpersteine in Raesfeld']; node(3327350804)['fixme:wikipedia'='de:Liste der Stolpersteine in Raesfeld']; node(3327350805)['fixme:wikipedia'='de:Liste der Stolpersteine in Raesfeld']; ); (._;>;); out meta qt;//['something is wrong with wikipedia tag - fixme:wikipedia is present']
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.