The Error Status attribute indicates whether the Present Value was successfully written to the list of property values in the Scheduled Items list. The Error Status displays Ok if the object was able to send its latest Present Value to every object in the Scheduled Items list. Otherwise, the Error Status displays the error of the first failed command. See the status log in the Scheduled Items view for the status for each attempted command. This attribute does not appear in the BCT, and does not appear for mapped third-party schedules.