Realty Partners, Inc. is being sued by a buyer who bought a home listed by Realty Partners. Realty earned a commission on the sale. The buyer is suing because the house has termites. Realty had relied on the pest inspector's report that represented the home as "termite-free." Realty sued the pest inspector as a cross-claimant. What type of information does Realty need to defend itself to the buyer, and how can it be obtained?