Re:Ask HN: Why hasn't the ACH system been more abused?
by snotrockets on Tuesday August 30, 2022 @12:43AM
(#32646710)
The definition of mistake is quite broad. Not all parties may agree to what is and isn’t, requiring litigation, but the transfer itself isn’t a done deal until a very lengthy process has been exhausted.
As opposed to ACH which could bounce or you could issue a stop payment.