DHCP server and Prizm EMS

I used scheme SM (Lan IP DHCP Enable) -> AP (Translation Bridging : Enable) -> Network (DHCP server and Prizm EMS).
Prizm configuration - disable ip address assignment
Sm registered on AP and recieve IP address from DHCP but PRIZM not management SM. Prizm recieve ip address
Why PRISM does not see the address obtained SM from DHCP?
Prizm version - 3.3.10, AP and SM - 10.5