Error 3036
Severity Level 16
Message Text
Database '%ls' is in warm-standby state (set by executing RESTORE WITH STANDBY) and cannot be backed up until the entire load sequence is completed.
Explanation
Your standby database has not been recovered and may not be backed up. Usually, you recover this database only if your primary fails and you switch operations to the standby. Until this occurs, rely on backups taken from the primary server.