Error 0x8031005B

Value: -2144272293 | 0x8031005B | 2150695003

What does it mean ?

FVE_E_INVALID_STARTUP_OPTIONS  
The Group Policy settings for BitLocker startup options are in conflict and cannot be applied. Contact your system administrator for more information.
Value: 91 | 0x005B | 0b0000000001011011

Where does it come from ?

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

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