Seaquel
SQL Server error code

SQL Server error 1469

SQL Server raises error 1469 at severity 16, which marks a problem with the query or data that you can correct.

Database "%.*ls" is an auto-close database on one of the partners which is incompatible with participating in database mirroring or in an availability group.
Msg1469
Severity16
Group1000–1999

Source: Database Engine events and errors