On the LEAD Administration screen, select View 
for the Show Debug Files option to see the Debug File Listing screen.
Figure 467: Debug File Listing Screen
On this screen, select View to review or download the debug file for that date. The debug file can be helpful in tracking down problems in how LEAD operates.
Debug File Listing Fields
No
The number (No) column provides a sequential count of the entries, which is not attached to the entries themselves.
Debug File
The Debug File displays the date of the debug file in the file name in a Year-Month-Day format.