3819252 - How do I distinguish if the expense reports were created by Expense Assistant?

I would like to know if it is possible to distinguish expense reports that were created by Expense assistant. I was trying to check if I can get the information through audit trail or is there any query so that we can see if an expense report was created by Expense Assistant.

I am not able to find a way to know if the expense reports are created by Expense Assistant. , KBA , CON-EXP-EXP , Expenses , CON-CA , Cross Applications , CON-CA-ADM , Administration , Problem