All reports of invalid-version-number-for-derivative for the archive. The extended description of this tag is:
The version number for this package does not comply with the required format for this Debian derivative.
Derivative distributions of Debian may enforce additional restrictions on the version in order to ensure that forked (or packages that are otherwise modified) are marked as such.
Severity: serious, Certainty: certain
Check: fields, Type: binary, udeb, source
This tag has not been emitted in any package tested by Lintian.