Error 0x80040D2A

Value: -2147218134 | 0x80040D2A | 2147749162

What does it mean ?

GTHR_E_DUP_PROPERTY_MAPPING  
The property mapping is duplicated in the schema. Remove the duplicate property schema.
Value: 3370 | 0x0D2A | 0b0000110100101010

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