Error 0x00043657

Value: 276055 | 0x00043657 | 276055

What does it mean ?

FTE_S_TRY_TO_FLUSH  
Internal Success Code. Crawl is done. Chunk buffers can be flushed; there is no additional input data.
Value: 13911 | 0x3657 | 0b0011011001010111

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