All reports of doc-base-file-unknown-field for the archive. The extended description of this tag is:
The doc-base control file contains field which is either unknown or not valid for the section where was found. Possible reasons for this error are: a typo in field name, missing empty line between control file sections, or an extra empty line separating sections.
Refer to Debian doc-base Manual section 126.96.36.199 (The main section) and Debian doc-base Manual section 188.8.131.52 (Format sections) for details.
This tag has not been emitted in any package tested by Lintian.