How to Remove Users License from Veeam Backup for Microsoft Office 365
You have to very carefully about users License before run Veeam Backup for Microsoft Office 365 backup job, because once a license has been given over to a user/site/item, it will aspirate (fall off) 31 days after the last backup. so, you will got the warning message even you removed the user from the backup job settings.
Fortunately, you don’t need to remove backup job or backup repository now because Veeam Backup for Microsoft Office 365 V3.0 added the feature to remove licensed users, but you must remove those unwanted licensed users from backup repository’s database and then remove the license.