Seaquel
SQL Server error code

SQL Server error 8947

SQL Server raises error 8947 at severity 16, which marks a problem with the query or data that you can correct.

Table error: Multiple IAM pages for object ID %d, index ID %d, partition ID %I64d, alloc unit ID %I64d (type %.*ls) contain allocations for the same interval. IAM pages %S_PGID and %S_PGID.
Msg8947
Severity16
Group8000–8999

Source: Database Engine events and errors