The persons whose names appear in the additional exclusion list are the ones who were included in the draft NRC published on July 30 last year, but subsequently found ineligible. According to a statement issued by the state coordinator of NRC, the list has been published as per provisions of Clause 5 of the Schedule of the Citizenship (Registration of Citizens and Issue of National Identity Cards) Rules 2003.

from Times of India https://timesofindia.indiatimes.com/india/additional-exclusion-list-to-draft-nrc-published-in-assam/articleshow/69954108.cms