Outsourcing of origination functions helped mortgage lenders deal with the record volume generated by this year’s historically low interest rates. But while lenders have praised the efficiencies that outsourcing can bring to a business, rating agency Fitch has sounded a warning about the risks. “It is important that mortgage originators/issuers recognize specific vendor limitations and risks of outsource providers, including business continuity,” Fitch said in a Sept. 26 update of its rating criteria.