GST exemption for public utility services and expanded railway references in Andhra Pradesh notification amendment. The notification amends the Andhra Pradesh GST exemption and rate table by inserting a Nil-rated entry for services provided to a Governmental Authority by way of water supply, public health, sanitation conservancy, solid waste management, and slum improvement and upgradation. It also expands existing references to the Department of Posts to include the Ministry of Railways (Indian Railways) in specified entries and provisos. The amendments are issued under the State GST Act and take effect from 20 October 2023.