APRA CPS 230 para 49 (services treated as material)

Unless it can justify otherwise, the entity must at least treat providers of these services as material: for an ADI, mortgage brokerage, credit assessment, and funding and liquidity management; for an insurer, insurance brokerage, reinsurance, underwriting and claims management; for an RSE licensee, custodial services, fund administration, investment management, and arrangements with financial planners and promoters; and for all entities, internal audit, risk management and core technology services.