A computer readable medium storing a program causing a computer to execute a process for controlling a plurality of operations, the process including: accepting a change request to change an operation result of an operation executed prior to a current execution-permitted operation which an execution is permitted based on an operation procedure for the operations; assuming an operation for which the change request is accepted in the accepting step as a starting point; and identifying an operation permitted to be executed with reference to the starting point based on the operation procedure.