Confirm the request belongs to the supplier
Check whether the invoice, PO number, service history, and email domain line up with your existing supplier relationship.
Confirm the destination
If account details are new or changed, verify through a channel you already trust. A forwarded email or copied signature is not enough.
Confirm the approval path
A safe payment should survive normal review. If the request needs secrecy, speed, or skipped approval, treat it as a verification failure.