Not able to Unreserve Config Item ("ORA-01403: no data found")

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Please Note that for a  CONFIG items, unreservation ACTION is allowed only when the workflow for Sales Order line is at activity SHIP LINE.
If workflow for Order line is not at workflow activity SHIP_LINE and you try to unreserve the order line system will not let you cancel the Order line and it Unreserve action might result in Error "ORA-01403: no data found