1. A scenario creating apparatus which creates a scenario for verifying operation of an information processing system in which a plurality of servers including a database server are connected, comprising: a collector that collects messages transmitted and received between the plurality of servers, when operation of the information processing system is being verified by a terminal apparatus that performs verification of operation; an association unit that associates the collected messages with each other; a sorter that sorts work models in ascending order of time at which access is made to the database server, the work models each being a group of the associated messages; and a scenario creating unit that creates the scenario on the basis of the sorted work models.