Coal import registration requirement now mandates CIMS registration and entry of registration details in the Bill of Entry for clearance. Specified coal imports under Chapter 27 remain free but require compulsory registration under the Coal Import Monitoring System (CIMS). Importers must submit advance online information, obtain an automatic Registration Number on payment of a registration fee subject to prescribed minimum and maximum caps, apply within a designated pre-arrival window, and enter the Registration Number and its expiry in the Bill of Entry to enable customs clearance; bills of entry filed on or after the notified effective date for listed items are governed by CIMS.