Seaquel
SQL Server error code

SQL Server error 3752

SQL Server raises error 3752 at severity 16, which marks a problem with the query or data that you can correct.

The database '%.*ls' is currently joined to an availability group. Before you can drop the database, you need to remove it from the availability group.
Msg3752
Severity16
Group3000–3999

Source: Database Engine events and errors