Is there a way to pull completed approval notifications from the back end.

This is the issue we have where a supplier was paid via check instead of ACH, which was the defaulted payment method on the site. Oracle is randomly sending payments to vendors as checks when they are set up to receive payment via ACH. This has happened to me twice now in 2 weeks causing payment delays and confusion for our vendors. 

In this case, we don’t have the original notification. Is there a way to pull completed approval notifications from the back end? I cannot find it in the BPM.