Headings in this report matched the established (1XX) or cross-reference (4XX) in more than one authority record (for example, more than one LC authority record). Headings are included if either the full heading or just the primary heading matched multiple authority records. Other changes to the heading, not based on the authority matching process, can be made, such as an incorrectly spelled subdivision being flipped to the correct form).

Partially matched heading are included only if the full heading did not match any heading in the authority file, but a portion of the heading (one of the higher levels) matched the established heading in more than one authority record. This partial match may occur when a free-floating subject subdivision or geographic subdivision has been used with a subject heading that appears in two LC authority records.