We want to change domain name of media server and its clients kindly provide procedure to change domain name.
Please follow technote - https://www.veritas.com/support/en_US/article.TECH38988.
If does not work, you might need to open a ticket with support as the databases needs to be altered.
Lets assume that the server name was A-1 when Be was installed.
You have changed the server name to A-2.
Get into C Drive Program Files, Symantec, BAckup Exec: OPen BEutil.exe
Select All backup Exec servers, Right click the server A-1 or A-2, Select Edit server configuration or Update server configuration.
Restart the BE services, Launch it, Hope this helps!