There is no error message.
The query to fetch tenant names returns all names in the domain but does not check the isDefault parameter which leads to the addition of a non-default domain name as a M365 tenant in Backup Exec.
Note: This does not cause any problems with Backup and Restore from that tenant.
A hotfix is now available for this issue. Backup Exec 22.2 Hotfix 917391
Backup and Restores are not impacted even if the non-default tenant name gets added as M365 tenant in Backup Exec.

ETrack: 4115698 SW Download: UPD917391