Seaquel
SQL Server error code

SQL Server error 8108

SQL Server raises error 8108 at severity 16, which marks a problem with the query or data that you can correct.

Cannot add identity column, using the SELECT INTO statement, to table '%.*ls', which already has column '%.*ls' that inherits the identity property.
Msg8108
Severity16
Group8000–8999

Source: Database Engine events and errors