The optional default maximum duration, specified when registering the activity type, for tasks of this activity type. You can override this default when scheduling a task through the ScheduleActivityTaskDecision. The valid values are integers greater than or equal to 0. An integer value can be used to specify the duration in seconds while NONE can be used to specify unlimited duration.

Constraints:

Length

0 - 8

public string DefaultTaskScheduleToCloseTimeout { get; set; }