Remove SQL Server service account

Hi,
I need to change the LogOnAs service account from LocalSystem to a domain
user at the remote SQL Server that hosts the site database for my SCCM.

When I do that I can no longer launch the SCCM console. It looks looks like
I need to make some changes in the SCCM config to have proper rights.

Please let me know what needs to change to allow access to the remote sql db
that is not running Local System for the SQL Server Service.

Thank you...