id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
20781	Prevent uploading of empty relations	Mashin	team	"There are currently ~56,000 empty relations in OSM and most of them were uploaded from JOSM (https://lists.openstreetmap.org/pipermail/talk/2021-April/086499.html). 

I know that empty relations are shown as errors in validator, but if validator is ignored then they can still be uploaded. I wonder if JOSM should refuse to upload changesets with empty relations or automatically ""fix"" the error before upload. If not as a general behavior it could be perhaps active only when ""Expert Mode"" is not enabled.

 "	enhancement	closed	normal		Core validator		worksforme	empty relation upload