Seaquel
SQL Server error code

SQL Server error 1430

SQL Server raises error 1430 at severity 16, which marks a problem with the query or data that you can correct.

Database '%.*ls' is in an unstable state for removing database mirroring, so recovery may fail. Verify the data after recovery.
Msg1430
Severity16
Group1000–1999

Source: Database Engine events and errors