According to the Code on Social Security, 2020 how are establishments covered under this Code required to be registered?

Section 3 Registration and cancellation of an establishment: (1) Every establishment to which this Code applies shall be electronically or otherwise, registered within such time and in such manner as may be prescribed by the Central Government: Provided that the establishment which is already registered under any other Central labour law for the time being in force shall not be required to obtain registration again under this Code and such registration shall be deemed to be registration for the purposes of this Code.