You would need to create NAT exemption for ip pool in different subnet as follows:
object network obj-192.168.1.0
subnet 192.168.1.0 255.255.255.0
object network obj-172.16.1.0
subnet 172.16.1.0 255.255.255.0
nat (inside,outside) source static obj-192.168.1.0 obj-192.168.1.0 destination static obj-172.16.1.0 obj-172.16.1.0
Hope that helps.