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Odd handling of errors in the PI Vision datapump

Question asked by Roger Palmen on Jun 28, 2018
Latest reply on Jun 29, 2018 by Roger Palmen

In a custom symbol, i was just digging through an issue. I typically check IsGood on the data received to check if the value received from the datapump is of any use, until i got this item in my data:


Description: "---removed"

ErrorCode: 1000

ErrorDescription:"Failed to resolve required input '---removed'"




Value:"Keine Daten"


I'm a bit surprised about this result, never ran into this before. Why do i get a valid value where there is none? I can't really follow th reasoning behand that...

Do i need to do checking on the existence of the ErrorCode too in the results to determine if i have a valid value? As i can't determine that from either IsGood or Value properties...