I received the following error on email send after a notification was triggered.
What it means and how it can be resolved?
Can you let us know which data reference is this? so that it will be easy for us to understand the issue.
If you using Analysis Data directly writing to the Attribute (Non-PI Point reference) and using that as input with PI Notifications and PI Notifications fails to load PI Analysis plug-in because of a .NET version conflict. You should be able to overcome this issue by writing the Analysis result to a PI Point.
Thank you for your reply. The attribute has a PI-point data reference with write access, i.e. the analysis result is written in this attribute and archived to PI.
In addition, the incident I reported happened once, after checking in the notification, and then, when it was triggered again, it worked as expected and sent the email.
May I ask you what version of PI Notifications you are using?
Also if possible, please try shooting a test email from the Email Delivery Channel Configuration.
PI Notification - Update SMTP settings for the email delivery channel
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