A critical part of your success with Coupa is utilizing Coupa's robust approval process to get "permission beforehand as opposed to forgiveness after the fact".

It is important to track this savings to note how much you have saved as part of Coupa.

Avoidance savings is computed by value of each requisition and expense report that has been rejected during the approval process. If it was resubmitted and is pending approval or approved, then it is not counted.