27 April 2016
sec 4 (1) Subject to the provisions contained in section 3, when a sale or purchase of goods is determined in accordance with sub-section (2) to take place inside a State, such sale or purchase shall be deemed to have taken place outside all other States. : This means if a sale is treated to be in the state of maharashtra, then again some other stae say e.g. gujrath, karnataka, telangana, madhya pradesh can consider the same as their respective state's sale.