[OSM-talk] Identical Duplicate buildings

[Mike Thompson]

On Wed, Jan 27, 2021 at 5:01 PM Pierre Béland via talk <
talk at openstreetmap.org> wrote:

>
> This might be possible.  When you create an element, e.g. a node, in an
editor (JOSM, iD, etc.), the editor does not know what id the OSM database
will ultimately assign to that element. Therefore the editor assigns a
temporary id, which is always negative. As part of the upload process, the
OSM API sends a response to the editor telling it what ids were actually
assigned.  Thus, if the process is interrupted (e.g. because of a bad
internet connection), the editor might not get the actual id, and may
believe the upload failed.  Later, if the mapper attempts to upload again,
the same data, although with different ids, may get put into the OSM
database again.

After an upload attempt that seems to have failed, check to make sure the
data isn't really in OSM before attempting again.

Mike
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