Hiding Composite key from activator alert

Hi VixC ,
Thank you for reaching out to us on Microsoft Fabric Community Forum!

At the moment, the composite key in Activator alerts is automatically included in the Teams message body and isn ot something you can hide directly through the UI ,even if you have already selected the specific fields you want to display. You may try customizing the alert message using dynamic tokens like {{FieldName}} to control much of the content , but the composite key may still appear in the default Teams card layout. If you need more control, an advanced option is to send the alert through a webhook and use Power Automate to format the Teams message exactly the way you want.Refer the document here
This is great feedback.  I also recommend posting it on the Microsoft Fabric Ideas forum so others can vote on it too.

Thank you.

Regards,
Pallavi G.