Gujarat GST Act, 2017
(a) where a supply is received at a place of business for which the registration has been obtained, the location of such place of business; (b) where a supply is received at a place other than the place of business for which registration has been obtained (a fixed establishment elsewhere), the location of such fixed establishment; (c) where a supply is received at more than one establishment, whether the place of business or fixed establishment, the location of the establishment most directly concerned with the receipt of the supply; and (d) in absence of such places, the location of the usual place of residence of the recipient;