Error 0x80040D0D

Value: -2147218163 | 0x80040D0D | 2147749133

What does it mean ?

GTHR_E_DUPLICATE_URL  
The URL was already processed during this update. If you received this message while processing alerts, then the alerts are redundant, or else Modify should be used instead of Add.
Value: 3341 | 0x0D0D | 0b0000110100001101

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