Epicor SQL Database - change user ID for services

Hi Team,

For Epicor currently the SQL server services running as log on user ID “erpadmin” which is a domain user ID with domain admin access. We have this ID added in the SQL server login list on “Microsoft SQL Server Management”. Now we want to change this user ID to another domain ID which is not listed on list on “Microsoft SQL Server Management”. Can we change this user ID? If yes, what procedure I need to follow.

Thanks

Sazzad