Commencement of amendment: section 10 of Haryana GST (Amendment) Act effective from 1 September 2020. The notification appoints the commencement date for the Haryana GST Amendment, stating that the amendment provision modifying an existing GST provision shall come into force from 1 September 2020, the appointment being made under the Amendment Act by the Governor and issued by the Principal Secretary to the Excise and Taxation Department.