The Trusted User Name Identifier combines a user name with the name of the user’s domain to form the Fully Qualified Trusted User Name. This name is used to identify a trusted user from a trusted realm. Use this procedure if you need to add or remove a domain name from the Fully Qualified Trusted User Name.
Use caution when choosing which domain name to remove. If you remove the wrong domain name, your realm might fail to authenticate trusted users from a trusted realm.
In the Security Console, click Administration > Trusted Realms > Manage Existing.
Select the trusted realm you want to edit.
From the context menu, click Edit.
Do one of the following:
In the Trusted User NameIdentifier field that contains the current domains, select the domain name that you want to remove, and click Remove.
In the Trusted User NameIdentifier field, type the domain name that you want to add, and click Add.