Error 0x80310061

Value: -2144272287 | 0x80310061 | 2150695009

What does it mean ?

FVE_E_POLICY_STARTUP_PIN_REQUIRED  
Group Policy settings require the use of a PIN at startup. Please choose this BitLocker startup option.
Value: 97 | 0x0061 | 0b0000000001100001

Where does it come from ?

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

Other Errors for FACILITY_FVE