Error 0xC004C770

Value: -1073428624 | 0xC004C770 | 3221538672

What does it mean ?

SL_E_CHPA_PRODUCT_KEY_BEING_USED  
The activation server reported that the product key type is being used by another user.
Value: 51056 | 0xC770 | 0b1100011101110000

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