First part protects any right, privilege, obligation, etc. under the amended Act or repealed Acts. Proviso thereto provides that any tax exemption granted as an incentive against investment shall not continue as a privilege if the said notification is rescinded on or after the appointed day. Para39. On the issue that the Union should have issued exemption notification as provided under Section 11 of the CGST Act is concerned, we find that under the said provision, a discretion is vested in the Central Government, 64 which is to be exercised on the recommendations of the GST Council. A writ of mandamus cannot be issued to the Central Government to exercise power under Section 11 of the CGST Act in a particular manner. It is more than settled that this Court cannot interfere in policy matters of the Government unless such policy is found to be palpably arbitrary and irrational. Para 86
[Hero Motocorp Ltd. v. Union of India, (2023) 1 SCC 386]