Error 0x80310060

Value: -2144272288 | 0x80310060 | 2150695008

What does it mean ?

FVE_E_POLICY_STARTUP_PIN_NOT_ALLOWED  
Group Policy settings do not permit the use of a PIN at startup. Please choose a different BitLocker startup option.
Value: 96 | 0x0060 | 0b0000000001100000

Where does it come from ?

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

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