Assuming that One of your TEM users was testing in production.  After having a problem with the automated correspondence. The user created a business event, booked people into the event, then followed up on the event. Unfortunately, the user also historically recorded the event. 

If this happened, you need to delete the event because it will give the people which the user booked credit for having
attended an invitation only type of leadership seminar. 

Using report RHRHDL00 (menu path in 4.6C : Human Resources / Training and Event Management / Tools / Database / Delete database records), you can delete data records from the Personnel Planning Database. 

Of course, be careful while making the selections for deletion and do a test run first. 

SAP Human Resouce Books
SAP HR Books - Certification, Interview Questions and Configuration

SAP Human Resource Tips
SAP HR Tips and Human Resource Management

Main Index
SAP Basis, ABAP Programming and Other IMG Stuff