Error 0x8027002A

Value: -2144927702 | 0x8027002A | 2150039594

What does it mean ?

COPYENGINE_E_ALREADY_EXISTS_READONLY  
Destination with read-only attribute exists, cannot replace
Value: 42 | 0x002A | 0b0000000000101010

Where does it come from ?

FACILITY_SHELL  
User Shell
Value: 39 | 0x027 | 0b00100111

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