I have a question. When I had a PI value web parts, after select the tag I want to display and click ok, I have this error:
Moreover I see that table columns are empty
The first think I would check is security. Could you verify that both the account running the application pool and the specific user account have read access to PI points, PI AF servers, databases and elements?
In the PI Server you can check in PI SMT>network manager statistics which pi identity is taking webparts (a process called “w3wp.exe” with a RegAppName of “RtWebParts”) and then check the permissions of that identity in the required points
Retrieving data ...