Miss. Code Ann. § 41-43-40

Every perpetual care cemetery shall maintain continuously and at all times an up-to-date record of the persons buried in the cemetery or entombed within a mausoleum or columbarium; the date of burial or entombment; a map of the designated lot for burial or entombment as well as a map of lots, burial spaces, mausoleum crypts or columbarium niches that have been sold. The map or plat shall also contain up-to-date designations indicating committed or planned designations of burial lots, crypt, niche or mausoleum spaces for future use. Additionally, the Secretary of State may require those maps to be filed with the Secretary of State in any intervals as the Secretary of State may establish by rule or regulation.