Explanation/Reference:
Explanation:
Server 1 (IPAM): Access Policy
VMM must be granted permission to view and modify IP address space in IPAM, and to perform remote management of the IPAM server. VMM uses a "Run As" account to provide these permissions to the IPAM network service plugin. The "Run As" account must be configured with appropriate permission on the IPAM server.
To assign permissions to the VMM user account
In the IPAM server console, in the upper navigation pane, click ACCESS CONTROL, right- click Access Policies in the lower navigation pane, and then click Add AccessPolicy.
Etc.
Server 2 (VMM) #1: Network Service
Server 2 (VMM) #2: Run As Account
Perform the following procedure using the System Center VMM console.
To configure VMM (see step 1-3, step 6-7)

References: https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-R2- and-2012/dn783349(v=ws.11)