In this Part:
"Commissioner" means the Commissioner of Taxation.
"prescribed RSA--" see regulation 3A.02.
"unique RSA identifier" , for an RSA provider, means:
(a) the ABN of the RSA provider followed by 3 numerals; or
(b) if the RSA provider is also an RSA institution--the ABN of the RSA institution, followed by 3 numerals; or
(c) another kind of unique identifier approved in writing by the Commissioner.