Explanation:
IPAM must be installed on a domain member computer. You cannot install IPAM on a domain controller.
IPAM installation on a DHCP server is not recommended. The IPAM server discovery feature will not be able to discover DHCP roles if DHCP Server is installed on the same computer.
IPAM supports only domain joined DHCP, DNS and NPS servers in a single Active Directory forest.
https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-
2012/jj878312(v=ws.11)