Seaquel
SQL Server error code

SQL Server error 3109

SQL Server raises error 3109 at severity 16, which marks a problem with the query or data that you can correct.

Master can only be restored and fully recovered in a single step using a full database backup. Options such as NORECOVERY, STANDBY, and STOPAT are not supported.
Msg3109
Severity16
Group3000–3999

Source: Database Engine events and errors