For a thing done by an OBU to be an OB activity, it is necessary that, when the thing is done:
(a) the OBU is a resident and the thing is not done in carrying on business in a country outside Australia at or through a permanent establishment of the OBU; or
(b) the OBU is a non - resident and the thing is done in carrying on business in Australia at or through a permanent establishment of the OBU.