All reports of doc-base-index-references-multiple-files for the archive. The extended description of this tag is:
The Index field in a doc-base file should reference the single index file for that document. Any other files belonging to the same document should be listed in the Files field.
Refer to Debian doc-base Manual section 22.214.171.124 (Format sections) for details.
This tag has not been emitted in any package tested by Lintian.