Was bezweckst Du mit all diesen kaputten Multipolygonen?
https://tools.geofabrik.de/osmi/?view=areas&lon=8.21923&lat=53.09540&zoom=12&baselayer=Geofabrik%20Standard&opacity=0.95&overlays=duplicate_node%2Csingle_node_in_way%2Cduplicate_segment%2Cway_in_multiple_rings%2Cintersection%2Cintersecting_segments%2Cring_not_closed%2Ctouching_rings%2Crole_should_be_inner%2Crole_should_be_outer%2Cinner_with_same_tags%2Cways%2Cduplicate_node%2Csingle_node_in_way%2Cduplicate_segment%2Cway_in_multiple_rings%2Cintersection%2Cintersecting_segments%2Cring_not_closed%2Ctouching_rings%2Crole_should_be_inner%2Crole_should_be_outer%2Cinner_with_same_tags%2Cways
https://tools.geofabrik.de/osmi/?view=areas&lon=8.69685&lat=52.79920&zoom=15&baselayer=Geofabrik%20Standard&opacity=0.95&overlays=duplicate_node%2Csingle_node_in_way%2Cduplicate_segment%2Cway_in_multiple_rings%2Cintersection%2Cintersecting_segments%2Cring_not_closed%2Ctouching_rings%2Crole_should_be_inner%2Crole_should_be_outer%2Cinner_with_same_tags%2Cways%2Cduplicate_node%2Csingle_node_in_way%2Cduplicate_segment%2Cway_in_multiple_rings%2Cintersection%2Cintersecting_segments%2Cring_not_closed%2Ctouching_rings%2Crole_should_be_inner%2Crole_should_be_outer%2Cinner_with_same_tags%2Cways

Bitte bei der Löschung von Wegen sorgfältiger vorgehen. Sie können Bestandteil einer Relation z.B. eines Multipolygons sein. Ihre Löschung ohne sich um ihren Kontext zu kümmern, hinterlässt dann eine sinnentleerte Relation.
Beispiel: Löschung des Weges 916937095 https://osm.mapki.com/history/way/916937095 hinterlässt das kaputte Multipolygon relation/12442517#map=15/49.0784/12.1443
Ausserdem geht durch die Löschung neben der Historie des Weges auch die sämtlicher beteiligter Knoten verloren. Das entspricht nicht guter fachlicher Praxis: osm.wiki/DE:Good_practice#Erhalte_die_Chronik%E2%86%99
Das kann man vermeiden, indem man einzelne Flächen aus dem bestehenden äussern Polygon abtrennt.

Für Routenrelationen bitte bestehende Wege verwenden, nicht einfach neue Wege drüberbügeln.
https://tools.geofabrik.de/osmi/?view=routing&lon=9.66256&lat=51.11373&zoom=16&baselayer=Geofabrik%20Standard&opacity=0.95&overlays=duplicated_edges%2Cduplicated_edges%2Cduplicated_edges_areas

Und was jetzt? Reparieren?
https://tools.geofabrik.de/osmi/?view=areas&lon=13.02115&lat=47.30151&zoom=13&baselayer=Geofabrik%20Standard&opacity=0.95&overlays=duplicate_node%2Csingle_node_in_way%2Cduplicate_segment%2Cway_in_multiple_rings%2Cintersection%2Cintersecting_segments%2Cring_not_closed%2Ctouching_rings%2Crole_should_be_inner%2Crole_should_be_outer%2Cinner_with_same_tags%2Cways%2Cduplicate_node%2Csingle_node_in_way%2Cduplicate_segment%2Cway_in_multiple_rings%2Cintersection%2Cintersecting_segments%2Cring_not_closed%2Ctouching_rings%2Crole_should_be_inner%2Crole_should_be_outer%2Cinner_with_same_tags%2Cways

Please finish properly:
https://tools.geofabrik.de/osmi/?view=areas&lon=13.65168&lat=46.44692&zoom=12&baselayer=Geofabrik%20Standard&opacity=0.95&overlays=duplicate_node%2Csingle_node_in_way%2Cduplicate_segment%2Cway_in_multiple_rings%2Cintersection%2Cintersecting_segments%2Cring_not_closed%2Ctouching_rings%2Crole_should_be_inner%2Crole_should_be_outer%2Cinner_with_same_tags%2Cways

Abgesehn davon, dass es (https://tools.geofabrik.de/osmi/?view=areas&lon=8.17682&lat=50.67839&zoom=15&baselayer=Geofabrik%20Standard&opacity=0.95&overlays=role_should_be_outer%2Cways) kein gültiges Multipolygon ist, was soll das darstellen? relation/16507573

Wenn Du von Mulitpolygonen nur den äußeren Ring löschst oder bearbeitest, was bleibt dann? Kaputte Realationen:
https://tools.geofabrik.de/osmi/?view=areas&lon=14.35956&lat=51.08036&zoom=15&baselayer=Geofabrik%20Standard&opacity=0.95&overlays=duplicate_node%2Csingle_node_in_way%2Cduplicate_segment%2Cway_in_multiple_rings%2Cintersection%2Cintersecting_segments%2Cring_not_closed%2Ctouching_rings%2Crole_should_be_inner%2Crole_should_be_outer%2Cinner_with_same_tags%2Cways%2Cduplicate_node%2Csingle_node_in_way%2Cduplicate_segment%2Cway_in_multiple_rings%2Cintersection%2Cintersecting_segments%2Cring_not_closed%2Ctouching_rings%2Crole_should_be_inner%2Crole_should_be_outer%2Cinner_with_same_tags%2Cways
https://tools.geofabrik.de/osmi/?view=areas&lon=14.20295&lat=51.16465&zoom=15&baselayer=Geofabrik%20Standard&opacity=0.95&overlays=duplicate_node%2Csingle_node_in_way%2Cduplicate_segment%2Cway_in_multiple_rings%2Cintersection%2Cintersecting_segments%2Cring_not_closed%2Ctouching_rings%2Crole_should_be_inner%2Crole_should_be_outer%2Cinner_with_same_tags%2Cways%2Cduplicate_node%2Csingle_node_in_way%2Cduplicate_segment%2Cway_in_multiple_rings%2Cintersection%2Cintersecting_segments%2Cring_not_closed%2Ctouching_rings%2Crole_should_be_inner%2Crole_should_be_outer%2Cinner_with_same_tags%2Cways

changeset/142481653

Bitte konsequent verbessern:
relation/4289695

This is not a multipolygon:
relation/11807772
Please retag relation type

Hast Du dir die Multipolygone angeschaut und findest sie in Ordnung?

Wenn Du Flächen neu anlegst, kümmere dich bitte auch um de Überreste deiner Bearbeitungen:
https://tools.geofabrik.de/osmi/?view=areas&lon=12.39370&lat=48.95128&zoom=15&baselayer=Geofabrik%20Standard&opacity=0.95&overlays=duplicate_node%2Csingle_node_in_way%2Cduplicate_segment%2Cway_in_multiple_rings%2Cintersection%2Cintersecting_segments%2Cring_not_closed%2Ctouching_rings%2Crole_should_be_inner%2Crole_should_be_outer%2Cinner_with_same_tags%2Cways%2Cduplicate_node%2Csingle_node_in_way%2Cduplicate_segment%2Cway_in_multiple_rings%2Cintersection%2Cintersecting_segments%2Cring_not_closed%2Ctouching_rings%2Crole_should_be_inner%2Crole_should_be_outer%2Cinner_with_same_tags%2Cways
https://tools.geofabrik.de/osmi/?view=areas&lon=12.39235&lat=48.92024&zoom=19&baselayer=Geofabrik%20Standard&opacity=0.95&overlays=duplicate_node%2Csingle_node_in_way%2Cduplicate_segment%2Cway_in_multiple_rings%2Cintersection%2Cintersecting_segments%2Cring_not_closed%2Ctouching_rings%2Crole_should_be_inner%2Crole_should_be_outer%2Cinner_with_same_tags%2Cways%2Cduplicate_node%2Csingle_node_in_way%2Cduplicate_segment%2Cway_in_multiple_rings%2Cintersection%2Cintersecting_segments%2Cring_not_closed%2Ctouching_rings%2Crole_should_be_inner%2Crole_should_be_outer%2Cinner_with_same_tags%2Cways

Wa sollen diese merkwürdigen ungültigen Multipolygone darstellen:
relation/16221650
relation/16113376
relation/1609445
relation/16094460
relation/1622165
relation/15553482

see changeset/140535557

please check the outcome of your edits: https://tools.geofabrik.de/osmi/?view=areas&lon=-77.83676&lat=46.20957&zoom=15&baselayer=Geofabrik%20Standard&opacity=0.95&overlays=duplicate_node%2Csingle_node_in_way%2Cduplicate_segment%2Cway_in_multiple_rings%2Cintersection%2Cintersecting_segments%2Cring_not_closed%2Ctouching_rings%2Crole_should_be_inner%2Crole_should_be_outer%2Cinner_with_same_tags%2Cways%2Cduplicate_node%2Csingle_node_in_way%2Cduplicate_segment%2Cway_in_multiple_rings%2Cintersection%2Cintersecting_segments%2Cring_not_closed%2Ctouching_rings%2Crole_should_be_inner%2Crole_should_be_outer%2Cinner_with_same_tags%2Cways

please check the outcome of your edits:
https://tools.geofabrik.de/osmi/?view=areas&lon=-71.75521&lat=46.67880&zoom=13&baselayer=Geofabrik%20Standard&opacity=0.95&overlays=duplicate_node%2Csingle_node_in_way%2Cduplicate_segment%2Cway_in_multiple_rings%2Cintersection%2Cintersecting_segments%2Cring_not_closed%2Ctouching_rings%2Crole_should_be_inner%2Crole_should_be_outer%2Cinner_with_same_tags%2Cways%2Cduplicate_node%2Csingle_node_in_way%2Cduplicate_segment%2Cway_in_multiple_rings%2Cintersection%2Cintersecting_segments%2Cring_not_closed%2Ctouching_rings%2Crole_should_be_inner%2Crole_should_be_outer%2Cinner_with_same_tags%2Cways

Please note the implications of your edits on all possible objects:
https://tools.geofabrik.de/osmi/?view=areas&lon=-62.81849&lat=46.35575&zoom=11&baselayer=Geofabrik%20Standard&opacity=0.95&overlays=duplicate_node%2Csingle_node_in_way%2Cduplicate_segment%2Cway_in_multiple_rings%2Cintersection%2Cintersecting_segments%2Cring_not_closed%2Ctouching_rings%2Crole_should_be_inner%2Crole_should_be_outer%2Cinner_with_same_tags%2Cways%2Cduplicate_node%2Csingle_node_in_way%2Cduplicate_segment%2Cway_in_multiple_rings%2Cintersection%2Cintersecting_segments%2Cring_not_closed%2Ctouching_rings%2Crole_should_be_inner%2Crole_should_be_outer%2Cinner_with_same_tags%2Cways

siehe https://overpass-turbo.eu/s/1xv2

Wenns denn überhaupt eine Relation sein muss. Es sind ja offensichtlich einzelne Wände.
Der Wert des name-tags entspricht m.E. auch nicht den Anforderungen an Eigennamen osm.wiki/DE:Namen#name_ist_nur_der_Name

relation/16062825 ist kein Multipolygon. Multipolygon-Relationen dienen der Darstellung von Grundflächen und haben lediglich geschlossene Umrisse von Einzelflächen als Mitglieder.