Error 0x80310007

Value: -2144272377 | 0x80310007 | 2150694919

What does it mean ?

FVE_E_SECURE_KEY_REQUIRED  
At least one secure key protector is required for this operation to be performed.
Value: 7 | 0x0007 | 0b0000000000000111

Where does it come from ?

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

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