Seaquel
SQL Server error code

SQL Server error 8969

SQL Server raises error 8969 at severity 16, which marks a problem with the query or data that you can correct.

Table error: IAM chain linkage error: Object ID %d, index ID %d, partition ID %I64d, alloc unit ID %I64d (type %.*ls). The next page for IAM page %S_PGID is %S_PGID, but the previous link for page %S_PGID is %S_PGID.
Msg8969
Severity16
Group8000–8999

Source: Database Engine events and errors