Error 0x8004FD03

Value: -2147156733 | 0x8004FD03 | 2147810563

What does it mean ?

FTE_E_FD_DOC_TIMEOUT  
The document being indexed timed out for an unknown reason. This may be due to a bug in a filter or wordbreaker.
Value: 64771 | 0xFD03 | 0b1111110100000011

Where does it come from ?

FACILITY_ITF  
COM/OLE Interface management. FACILITY_ITF is designated for user-defined error codes returned from interface methods
Value: 4 | 0x004 | 0b00000100

Other Errors for FACILITY_ITF