Error 0x803100CB

Value: -2144272181 | 0x803100CB | 2150695115

What does it mean ?

FVE_E_DE_PROTECTION_NOT_YET_ENABLED  
Protection has not been enabled on the volume. Enabling protection requires a connected account. If you already have a connected account and are seeing this error, please refer to the event log for more information.
Value: 203 | 0x00CB | 0b0000000011001011

Where does it come from ?

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

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