Seaquel
SQL Server error code

SQL Server error 3106

SQL Server raises error 3106 at severity 16, which marks a problem with the query or data that you can correct.

The filegroup "%ls" is ambiguous. The identity in the backup set does not match the filegroup that is currently defined in the online database. To force the use of the filegroup in the backup set, take the database offline and then reissue the RESTORE command.
Msg3106
Severity16
Group3000–3999

Source: Database Engine events and errors