On receipt of a claim, a Registration officer will register the claim in R&C ISH. Additional information can be found in the Step by Step Guide [2] if required. This may involve the creation of a new client.
Links
[1] https://clik.dva.gov.au/user/login?destination=comment/reply/19320%23comment-form
[2] https://clik.dva.gov.au/military-compensation-reference-library/rc-ish-guides/claim-registration