Seaquel
SQL Server error code

SQL Server error 679

SQL Server raises error 679 at severity 16, which marks a problem with the query or data that you can correct.

One of the partitions of index '%.*ls' for table '%.*ls'(partition ID %I64d) resides on a filegroup ("%.*ls") that cannot be accessed because it is offline, restoring, or defunct. This may limit the query result.
Msg679
Severity16
Group0–999

Source: Database Engine events and errors