Looks like your custom symbols attempt a connection against the PI Data Archive which fail twice due to a) a missing Mapping and b) because of a missing PI Trust.
Do you see similar behavior with the standard PI Vision controls? If not, this indicates your custom symbols do connect but as if they would attempt to connect through AF SDK or PI SDK.
Can you share how your custom symbols connect against the PI Data Archive?
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I believe you see the same error with the standard PI Vision Symbols. Please make sure to properly Enable Kerberos delegation.
Hello Gregor, thanks for your quick reply,
indeed, I forgot to update my title as the problem occured also with the native symbols.
I added Basic (it was only Kerberos before) in PI AF / Configuration ..., and now it works well,
have a good day,