Error 0x80040609

Value: -2147219959 | 0x80040609 | 2147747337

What does it mean ?

CM_E_INVALIDDATASOURCE  
The requested content index is empty or has not been added to the search server.
Value: 1545 | 0x0609 | 0b0000011000001001

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

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