Seaquel
SQL Server error code

SQL Server error 8929

SQL Server raises error 8929 at severity 16, which marks a problem with the query or data that you can correct.

Object ID %d, index ID %d, partition ID %I64d, alloc unit ID %I64d (type %.*ls): Errors found in off-row data with ID %I64d owned by %ls record identified by %.*ls
Msg8929
Severity16
Group8000–8999

Source: Database Engine events and errors