Error 0x80040E49

Value: -2147217847 | 0x80040E49 | 2147749449

What does it mean ?

DB_E_NULLACCESSORNOTSUPPORTED  
Null accessors are not supported by this provider.
Value: 3657 | 0x0E49 | 0b0000111001001001

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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