Plesk restoration failed:
Failed to restore the remote database DB_NAME (domain example.com). It cannot be restored for security reasons. Please contact your hosting provider to solve this issue
Database already exists.
Ensure that the database is not used by another user/domain/subscription.
If it is not used:
# mysqldump -uadmin -p`cat /etc/psa/.psa.shadow` DB_NAME > DB_NAME.dump.`date +%F.%s`.sql
mysql> drop database DB_NAME;
Repeat domain restoration.