Retrieve the latest stored run result for a schedule. Result is the string true or false when history exists. This operation does not populate ScheduleName, StartedAtUtc or FinishedAtUtc. With no matching history, numeric fields are zero and the result and text fields are null; this does not establish success or failure. Do not use ScheduleType=package to determine a package execution outcome. Retain the ExecutionId returned by package execution and use GetExecutionStatus, checking ResultJson and delivery separately.