ACO6204I The tail-log backup of the database name database from the primary server removes the databases from the AAG. Do you want to continue? Enter 'Y' for Continue or 'N' to cancel.
Explanation
The tail-log backup of databases from the primary server removes databases from the AAG.
System action
If the database is not removed from the AAG, the SQL Server reports an error when completing the backup.
User response
To continue with the tail-log backup and remove database from the AAG, enter Y. To cancel, enter N.