All reports of bad-version-number for the archive. The extended description of this tag is:

The version number fails one of the syntactic requirements of dpkg.

Refer to Debian Policy Manual section 5.6.12 (Version) for details.

Severity: serious, Certainty: certain

Check: fields, Type: binary, udeb, source

This tag has not been emitted in any package tested by Lintian.