Error 0xC004C016

Value: -1073430506 | 0xC004C016 | 3221536790

What does it mean ?

SL_E_CHPA_OEM_SLP_COA0  
The activation server reported that the specified product key cannot be used for online activation.
Value: 49174 | 0xC016 | 0b1100000000010110

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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