Every verification went through a person, one employee at a time
When an employee adds a spouse or child to a benefits plan, the company's platform has to confirm the dependent qualifies: a marriage certificate, a birth certificate, a government ID. The documents existed and the rules were clear. A contractor still had to move each case along by hand.
Someone called the employee, explained what to send, waited for it, inspected it and updated the record. If something was wrong or missing, the loop started again. The number of verifications done each week was set by how many contractors were working.