we have two PI points for which the values are manually entered. Both points currently have only tree values each entered at about the same time period (see screenshots below).
The first one of them will have Digital State "No Data" when referenced to an attribute in PI AF, whereas for the second one the last entered value will be shown.
In Point Builder, the snapshot value will be "Error reading system digital state" for the first point.
Screen shots from Point Builder and Archive Editor for the first point:
Screen shots for the second point:
What could be the trouble?