Jurisdiction of income-tax authorities updated: specified Mumbai Principal Commissioners/Commissioners assigned distinct local jurisdictions under section 120, effective on Gazette publication. Amendment under Section 120 substitutes serial numbers 106-111 in Schedule IV of CBDT notification No.50/2014 to reassign headquarters as Mumbai and to allocate distinct local jurisdictions to specified Principal Commissioner/Commissioner of Income tax posts; the change is administrative, effected by substitution of entries and comes into force on publication in the Official Gazette.