Configuring OpsMgr with SCVMM 2008 – VMM Service Account
If your SCVMM and OpsMgr environments are distributed, it is important to make sure the virtual machine service runs under a dedicated domain account and not Local System. Otherwise, you will receive the following message when you try to specify the RMS in the VMM Administration Console:
The Virtual Machine Manager service does not have required credentials to access the Operations Manager SDK service on ‘servername-rms’.
Add the VMM service account as an Administrator on the Operations Manager server, and then try the operation again.
ID: 11804
As the resolution states, you will need to add the VMM Service Account to the Management Group’s Administrator role otherwise you will not be able to complete the integration.