Incorrect backup images are displayed for availability group clusters
You can perform backups of multiple availability group clusters that have the same short cluster name but that exist in different domains. However, it is important to use the fully qualified domain name (FQDN) of the Windows Server Failover Clustering (WSFC) cluster when you browse for backups. In the NetBackup MS SQL Client, for the enter the FQDN of the WSFC cluster. If you use the short cluster name, NetBackup may not display the correct list of backup images.