A method of controlling a robot having a service schedule includes a number of tasks, where the robot does not complete a task. The robot will output information relating to the task it was not completed in accordance with its parameters and may output information relating to a reason why it was not completed. A task may not be completed if the robot is prevented from performing the task or when the robot did not perform the task within set parameters. The robot will then perform other tasks in the service schedule and output information as to which task(s) was/were note completed in accordance with its/their parameters.