I d like to know if VISION or CORESIGHT allows the change of a PI AF attribute value, or if need to change it from Excel or SE ?
This is currently not supported. You can find the answer here:PI Vision 2017: Resources and Q&A
The enhancement request is here for EF Attributes: Manually Enter Event (EF) Attributes (like a Reason Code) – Customer Feedback for OSIsoft & the PI System
Retrieving data ...