Location of supplier of service :
“Location of supplier of service” means:
(i) where a supply is made from a place of business for which registration has been obtained, the location of such place of business ;
(ii) where a supply is made from a place other than the place of business for which registration has been obtained, that is to say, a fixed establishment elsewhere, the location of such fixed establishment;
(iii) where a supply is made from more than one establishment, whether the place of business or fixed establishment, the location of the establishment most directly concerned with the provision of the supply; and
(iv) in absence of such places, the location of the usual place of residence of the supplier.