Hi Pantelis,

First of all, thanks a lot for this contribution.

An issue caused by this changeset is that it created duplicate nodes in some cases, such as the KEP for Lefkimmi (an area that I monitor). I guess that there are more duplicates like this.

The duplicate entry was placed close enough but in a wrong building. Also the tags with the existing one are pretty similar:

Existing:

description=Κέντρο Εξυπηρέτησης Πολιτών (ΚΕΠ) Λευκίμμης
email=d.lefkimmaion@kep.gov.gr
fax=+302662029019
government=yes
name=Κ.Ε.Π. Λευκίμμης
office=government
phone=+302662360230
website=https://www.kep.gov.gr/

Duplicate:

addr:country=EL
addr:housenumber=222Β
addr:postcode=49080
addr:street=21ης ΜΑΡΤΙΟΥ
building=government
contact:email=d.lefkimmaion@kep.gov.gr
contact:phone=+30 2662360230
contact:website=https://www.kep.gov.gr/
kepId=0427
name:el=ΚΕΠ ΛΕΥΚΙΜΜΑΙΩΝ
name=ΚΕΠ ΛΕΥΚΙΜΜΑΙΩΝ

I think the process that created the edits should have tried to detect for existing nodes and to not create duplicate nodes but just edit the existing nodes.

Also I have a question about the kepId. Would it be better to use the ref key for it (https://wiki.openstreetmap.org/wiki/Key:ref)? How about something like "ref:GR:kep_id"?

Was this import discussed in any forum of the Greek OSM community?