The Special Marriage Act, 1954
§48 — Transmission of copies of entries in marriage records
Every Marriage Officer in a State shall send to Registrar-General of Births, Deaths and Marriages of that State at such intervals and in such form as may be prescribed, a true copy of all entries made by him in the Marriage Certificate Book since the last of such intervals, and, in the case of Marriage Officers outside the territories to which this Act extends, the true copy shall be sent to such authority as the Central Government may specify in this behalf.