Error 0x80040E78

Value: -2147217800 | 0x80040E78 | 2147749496

What does it mean ?

DB_E_BADCONSTRAINTFORM  
ConstraintType is not DBCONSTRAINTTYPE_FOREIGNKEY and cForeignKeyColumns is not zero.
Value: 3704 | 0x0E78 | 0b0000111001111000

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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