id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
15374	problem deleting multilevel relations	aceman	team	"I had some problems uploading a changeset deleting multiple relations that were ordered in a tree.

I wanted to delete relation 1832956, that had relation 1832955 as a member which I wanted to delete too. 1832956 itself was a member of another relation, that was NOT to be deleted.

I deleted both 1832955 and 1832956 (the parent was loaded too) in one changeset and wanted to upload. I got the error:
SEVERE: org.openstreetmap.josm.io.OsmApiException: ResponseCode=412, Error Header=<Precondition failed: The relation 1832955 is used in relation 1832956.>
org.openstreetmap.josm.io.OsmApiException: ResponseCode=412, Error Header=<Precondition failed: The relation 1832955 is used in relation 1832956.>

The solution I came to was just delete 1832955, upload it, then delete 1832956 and upload again."	defect	reopened	normal	17.10	Core	latest		relation upload