Seaquel
SQL Server error code

SQL Server error 2520

SQL Server raises error 2520 at severity 16, which marks a problem with the query or data that you can correct.

Could not find database '%.*ls'. The database either does not exist, or was dropped before a statement tried to use it. Verify if the database exists by querying the sys.databases catalog view.
Msg2520
Severity16
Group2000–2999

Source: Database Engine events and errors