All reports of backports-upload-has-incorrect-version-number for the archive. The extended description of this tag is:
The version number doesn't comply with the standard backport version rules. It should end in ~bpoX+N, where X is the release version number of the target distribution.
Refer to http://backports.debian.org/Contribute/ for details.
This tag has not been emitted in any package tested by Lintian.