Error 0x80310018

Value: -2144272360 | 0x80310018 | 2150694936

What does it mean ?

FVE_E_TPM_NOT_OWNED  
You must initialize the Trusted Platform Module (TPM) before you can use BitLocker Drive Encryption.
Value: 24 | 0x0018 | 0b0000000000011000

Where does it come from ?

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

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