This report will allow you to keep track of the Vendor Invoices (VI) that have not been finalised.  Basically a user has started processing a VI but has not completed it.

To access this report, from the Blackpurl Header > Reporting / Reports > Recent Vendor Invoices 

This is the default format for this report and it will allow you to click on the relevant Invoice Number to go to that VI to see if it should be finalised:

** Note that the default will only show the last 7 days so you may want to extend this time frame to show all VI not finalised.  This is the link to show you how to change the parameters of the report - Reporting Tips - Totals / Changing Columns / Changing Parameters / Exporting Search Results