Is it possible to create an active full backup manually?

A. Yes, but only via PowerShell script.

B. Yes, using the Active Full option from the

shortcut menu of a corresponding job.

C. No, active full backups can be created only according to the schedule.

D. Yes, but only if the forward incremental backup mode is used.

Explanation:

Reference: https://helpcenter.veeam.com/backup/hyperv/

active_full_backup.html