Error 0x803100A1

Value: -2144272223 | 0x803100A1 | 2150695073

What does it mean ?

FVE_E_PROTECTOR_CHANGE_PIN_MISMATCH  
Please enter the correct current PIN.
Value: 161 | 0x00A1 | 0b0000000010100001

Where does it come from ?

FACILITY_FVE  
Full volume encryption
Value: 49 | 0x031 | 0b00110001

Other Errors for FACILITY_FVE