Commencement of Rule 87(13) under AP GST brings Form GST PMT-09 into force for prescribed payment procedures. The Government of Andhra Pradesh, under its GST statute and amendment rules, appoints a commencement date to give effect to Rule 87(13) of the AP GST Rules and the prescribed Form GST PMT-09, thereby bringing into force the specified payment procedure and documentation requirements under the state GST framework.