Ipsec VPN two NATs rules

Question

Hi, 
 
 I&acute;ve a VPN IPsec with one local subnet and one remote subnet. This VPN has a "NAT to" rule and works fine. 
 
 After some months working fine, I need to add a second local subnet: 
 
 192.168.157.0/24 1st ->Nat to "network1" 
 192.168.163.0/24 2nd (new) 
 
 But when I try to configure Nat to for 2nd network, the object "network1" has dissapeared. 
 
 Any idea? 
 regards

LuCar Toni · Answer

Because IPsec can only Map 1:1. 
 You can map a Network to a Single Host or a Network to a Network. 
 If you try to get a new Network, you need to configure a New SA (Local Network).