EndTime Attribute in Task instance less than StartTime

Hi,
Assume we are giving task related to reboot of manager and starttime is coming correctly and endtime is coming is default value like 1999/1970 due to issue of connecting to NTP server, not set properly

In this case can we show endtime as null or endtime as 1999/1970 or skip showing EndTime attribute in task instance get response, it will be like below


StartTime": "2012-01-01T00:04:31-05:00 "

"EndTime": "1999-01-01T00:00:33-05:00 ",

Since schema for endtime is not allowing null(http://redfish.dmtf.org/schemas/v1/Task.v1_6_1.json), showing null may not be appropriate and also task status is completed, so we need to show EndTime attribute in response


EndTime: {

description: "The date and time when the task was completed. This property will only appear when the task is complete.",

format: "date-time",

longDescription: "This property shall indicate the date and time when the task was completed. This property shall not appear if the task is running or otherwise has not been completed. This property shall appear only if the TaskState is Completed, Killed, Cancelled, or Exception.",

readonly: true,

type: "string",

}

Please suggest whether any chance of changing schema to allow null value for EndTime attribute or show incorrect time(Endtime is less than StartTime) or skip showing EndTime for completed task ike this in task instance get response

Thanks,
Mani