CENVAT credit amendment changes the effective date for rule 9A(4) to 12th May 2003, altering commencement timing. The CENVAT Credit (Eleventh Amendment) Rules, 2003 substitute the date specified in rule 9A(4) of the CENVAT Credit Rules, 2002, thereby changing the commencement date of that sub rule; the rules are made under the Central Excise Act and come into force on publication in the Official Gazette.