I am going to build a sample, but I would like to ask some questions while I do this.
1. What are the file names in the attachments?
2. Is this set to FW (for the subject? since its forwarded)?
3. Can you please share a copy of exactly what the Email body looks like, feel free to change words for protection but if you want help it cannot be so hidden.
Need details so I can help show you, as right now I have some basics, but need specifics if you want real help.
Also, can you please share the Flow it built for your, as that is incredibly important to understand what it is doing and why its not working.
4. Lastly, can you look in the Activity tab and see that it really triggers at all? Since this is not Autonomous based on how you described it.
And honestly my real recommendation would not be to call a flow to do this randomly.
I would
A) Make the Agent Autonomous ( we can still make one that you talk to but for this instance ) process them in real-time
B) Create an Automated Flow that looks for Forwards, and attachments
C) I do not believe I would use Generative AI here
D) Did you generate any trained data based on the Template of the Invoice?
If you can please respond to these and share a copy of the invoice and the body etc (again change the data is fine as long as the intent and meaning is the same).