Using VMM, created a VM Subnet, but not getting DHCP Ip Address

I created a Logical Network in VMM, and then created a VM Subnet, and created an IP Pool.  However, when I try to assign an adapter to the vm subnet, it looks like it is not getting an ip address through DHCP.

What am I missing ?

Please help

thank you

Also, if I go ahead and add the network adapter, I get an error message "The virtual network adapter 'Windows 10 [MAC: xxxxxxxxxx] doesn't have a CA (Customer Address) assigned from the VMSubnet related IP Pool."  Recommended Action "Assign a CA address from the VMSubnet Address Pool to the virtual network adapter and try again."