I am studying ASA concepts - NAT.
I Know ASA has three types of NAT as follows :
Manual NAT/Twice NAT - Best preferred
Object NAT/Auto NAT- Preferred after Manual NAT/Twice NAT
After Auto Manual NAT - Preferred After Object NAT/Auto NAT
I have seen few senarios where people write Manual NAT instead of Object NAT even though same function can be achieved from Object NAT/Auto NAT.