There was a previous scheduled report that was generated at a set interval.
After deleting the scheduled instance from Advanced Reporting, it still generates and is being emailed to end users.
Release : 15.8
Component : CA PPM SAAS APPLICATION
There is a potential environment where the Jaspersoft scheduler is still deploying a report with the same name.
Obtain the actual email and review the header properties.
This will show the origin of the email and can map to a test environment.