Error 0xC8000647

Value: -939522489 | 0xC8000647 | 3355444807

What does it mean ?

hrAlreadyPrepared  
The current entry has already been copied or cleared.
Value: 1607 | 0x0647 | 0b0000011001000111

Where does it come from ?

FACILITY_NTDSB  
Active Directory Domain Services
Value: 2048 | 0x800 | 0b100000000000

Other Errors for FACILITY_NTDSB