Multiple Active Directory Domains
If an organization has multiple Active Directory domains or adds a new domain to the organization’s Active Directory infrastructure, those additional domains are not automatically discovered by the product or appear in the Management site. The product adds a Default Domain based on the domain of the account used to install the product. You must add, edited and delete additional domains manually, using the Management Site, see the Domains topic in the User Guide for more information.
If you have a multi-domain environment and you have installation blocking authentication errors while installing the product, see the troubleshooting topic Authentication issues when installing the product in multi-domain environments