1. A management apparatus comprising: a storing unit configured to acquire and store, when generating a task in which an object and a network device to which to transmit the object are set, information about the object to be processed in the task; a detection unit configured to detect, when executing the task, whether information about the object to be processed in the task is changed from the information about the object stored in the storing unit when the task is generated, according to a setting of the task or the object to be processed in the task; a cancelling unit configured to cancel, when the detection unit detects that there is a change in the information about the object, execution of the task; and a transmission unit configured to transmit, when the detection unit detects that there is no change in the information about the object, the object to be processed in the task by executing the task.