This Article explains how you would be able to restore your license if you getting error while the backup process is running.

Error Message from Arconis:

Command 'Backing up' has failed.
Additional info:
Error code: 61
Module: 309
LineInfo: 4a8728dc8a1c94f4
Fields: $module : service_process_vs
Message: Command 'Backing up' has failed.
Error code: 1
Module: 408
LineInfo: 9418a040040a4e4b
Fields: $module : disk_bundle_vs
Message: The feature is not available.

On the machine, where the Acronis Management Server is running, please check following:

Go to Start -> Run -> regedit.exe
Locate the following registry key:
Modify the subkey LicenseServerAddress, type in the IP address of License Server and press OK
(!) It is recommended to use IPv4 address of License Server instead of name or IPv6 address, to prevent possible issues with name resolution.
Restart Acronis services on the machine with Acronis Agent:
Go to Start -> Run -> services.msc;
Right-click on Acronis Managed Machine Service, and click Restart