The Supreme Court of South Australia that has exclusive jurisdiction to make orders in relation to the validity of a will of a deceased person, the appointment of an executor or an administrator and the administration of a deceased estate. The Probate Registry, which forms part of the Supreme Court of South Australia, deals with applications for grants of probate or administration and other related matters.
https://dirosalawyers.com.au/deceased-estates/probate-letters-of-administration/