Seaquel
SQL Server error code

SQL Server error 8971

SQL Server raises error 8971 at severity 16, which marks a problem with the query or data that you can correct.

Forwarded row mismatch: Object ID %d, partition ID %I64d, alloc unit ID %I64d (type %.*ls) page %S_PGID, slot %d points to forwarded row page %S_PGID, slot %d; the forwarded row points back to page %S_PGID, slot %d
Msg8971
Severity16
Group8000–8999

Source: Database Engine events and errors