A specialist is a person or firm possessing expertise in specific subject matter. A reporting issuer might arrange for a specialist to provide certain specialized expertise such as actuarial services, taxation services or valuation services. Based on their assessment of risks as discussed in subsection 6.6(2) of the Policy, the certifying officers might identify the need for the services provided by a specialist. The certifying officers should ensure the issuer has controls, policies or procedures in place relating to the source data and the reasonableness of the assumptions used to support the specialist’s findings. The certifying officers should also consider whether the specialist has the necessary competence, expertise and integrity.