Void ACH/EFT Payment
You can void vendor payments marked as ACH/EFT by going to Expenses -> Checks -> View/Cancel Checks. This will not cancel any bank transfers that may have been initiated if using the NolaPay ACH/EF. For that case log into the NolaPay/USAePay portal and void payments there if they have not posted already.
To cancel AR ACH/EFT Payments go to Income -> Payments -> Void Payments. Similar to AP payments, if you need to cancel AR ACH bank transfers that have not posted yet, you will need to log into the NolaPay/USAePay portal and manage cancellation there.