All reports of unknown-priority for the archive. The extended description of this tag is:

The "Priority:" field in this package's control file is not one of the priorities defined in the Policy Manual.

Refer to Debian Policy Manual section 2.5 (Priorities) for details.

Severity: important, Certainty: certain

Check: fields, Type: binary, udeb, source

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