An information processing system manages data on customers using tenants which are storage regions dedicated for the customers of a database and registers a message for processing data of a processing target in a queue. The data is processed by accessing the tenants corresponding to the data so as to refer to the tenants based on the message. The information processing system registers a message for processing a plurality of data of processing targets as a batch process in the queue in a case where the plurality of data satisfy the predetermined condition when the message for processing a plurality of data of processing targets is to be registered in the queue. In the process performed on the plurality of data, the different tenants are accessed to be referred to.