3303086 (Saint-Victor-de-Remo) to be merged into 5812125:
Wikipedia says: Longny-les-Villages is a commune in the department of Orne, northwestern France. The municipality was established on 1 January 2016 by merger of the former communes of La Lande-sur-Eure, Longny-au-Perche (the seat), Malétable, Marchainville, Monceaux-au-Perche, Moulicent, Neuilly-sur-Eure and Saint-Victor-de-Réno.
Wikipedia refers to https://www.legifrance.gouv.fr/eli/arrete/2015/12/16/INTB1600628A/jo/texte

relation/343430
Please add the official name Valle de Yerri at least as an alternate name (I recommend a rename). As well as Deierri (official alternate name).
Sources are Eurostat (Local Administration Units, NUTS3 ES220, LAU-2 31260), INE and Wikipedia https://es.wikipedia.org/wiki/Valle_de_Yerri

Please rename relation/345938 to Collado de la Vera as referenced by Eurostat and Wikipedia.

way/41429885 should be a relation and admin-level 8, it's referred to by Eurostats LAU-2 as well as Wikipedia
https://en.wikipedia.org/wiki/Llocnou_de_la_Corona
http://ec.europa.eu/eurostat/web/nuts/local-administrative-units (NUTS3: ES523, LAU2: 46152)
I could neither locate cover for this area in https://osm.wno-edv-service.de/boundaries/ (enclosed by relation/340331 Alfafar and 348828 Sedaví)

КО Кривогаштани (4569666) should be admin-level 8.
Macedonia (2), Pelagonia Region (4) Municipality of Krivogashtani (7) КО Кривогаштани (8)

Error on relation/2264983 (admin level 9). According to Eurostat, the LAU2-code for Dubové (Banskobystrický kraj) is 518361 (not 813371)? There's another Dubové (Zilinský kraj), which is correctly referenced.
Thanks someone for updating (I'm user, don't know yet how to do that)

In Vlore, Albania, one single level-8 admin boundary is missing (Orikum). It would be helpful if this could be added (I'm new to this don't want to mess up).
Very visible if using https://osm.wno-edv-service.de/boundaries/ and I compare currently Eurostat LAU-2 with OSM, this is the only missing boundary in Albania.

2190496 was changed to admin level 9 (correct), but then 1745149 must be changed to include this former admin-level 6 area (which is now excluded), to avoid holes in a mapping display like on https://osm.wno-edv-service.de/boundaries/
ukrstat.org only refers to Обухівський район (no additional dataset for the city.

According to Eurostat Local Administrative Unit Level 2, NUTS3: EE007, LAU1: 0044, LAU2: 0251 is Jõhvi (no split between linn and vald). This is confirmed by https://en.wikipedia.org/wiki/Municipalities_of_Estonia#Ida-Viru_County
Please merge OSM relation/355161 with OSM relation/355259 for OSM admin level 8

According Eurostat NUTS3:EE008, LAU1:0065, LAUS2:0621 and https://en.wikipedia.org/wiki/P%C3%B5lva_Parish - Põlva linn has been merged in Oct 2013 with Põlva vald to new OSM admin level 8 Põlva.
I'm more user than mapper so would appreciate if someone could merge both accordingly.